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Featured Leanpub Book

Code, Chips and Control

The Security Posture of Digital Isolation

Sal Kimmich

Now we have made it to the kernel. Let's assume you have a chip, any chip, from the suppliers we've just discussed. You might choose to manually load a kernel onto that chip, using a GRand Unified Bootloader (GRUB) to load (or strap) the kernel, and pass all permissions over to it. It is the animus in the machine.

There are many different kernels, but they share one interesting characteristic to security: they run with the highest level of access, mediating interactions between user applications and the physical chips. A good kernel will handle low-level tasks like CPU scheduling, memory allocation, device input/output, and system calls. It is the bridge between software and hardware: if the kernel fails to load or crashes, the entire system will halt.

To make this level of access a bit safer, the kernel is designed to be always resident in memory, and execute in a protected mode that is isolated from applications. This prevents damage to core system data...

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The Shelf

  • Under The Hood

    Ramchand Kumaresan

    A practical, project-driven manual for engineers who want to understand how modern language models are built — and where they fail — by writing every layer themselves. From a scalar autograd engine to RLHF to fused specialists, in 35 hands-on projects with deliberate sabotage experiments. Build it. Break it. Measure it.

  • Logic for Programmers

    Hillel Wayne

    Not just for mathematicians and detectives! Learn the basics of logic and its many applications, including advanced testing, constraint solving, function composition, and code proofs. Over 50 exercises and 20 sample programs are included. No prior math background required!

  • Modern GPU Architecture Second Edition

    gareth thomas

    Graphics Pipeline Design and Hardware ImplementationModern GPUs are the most complex and efficient parallel processors ever created—and this book shows you exactly how they work at the hardware level.Unlike typical graphics or programming guides, this volume takes you inside the GPU itself: how instructions flow through pipelines, how memory hierarchies sustain bandwidth, how shader cores and fixed-function units cooperate to render billions of pixels per second.

  • The Effective Software Engineer

    Stefan Ellersdorfer

    What makes a software engineer truly effective? Beyond writing code, effectiveness comes from ethics, sustainable practices, collaboration, and the courage to adapt. The Effective Software Engineer guides you from clean coding habits to organizational empowerment, bridging the gap between developers and leaders.

  • Architectural Metapatterns

    Denys Poltorak

    You’ll find inside:- An atlas of system topologies.- A compendium of architectural patterns.- One of the largest and most cohesive pattern languages.

  • Design Patterns in Modern Java

    Jitin Kayyala

    Java has changed. Have your patterns kept up?The Gang of Four wrote their landmark patterns in 1994 — when Java didn't exist, generics were a decade away, and "concurrency" meant carefully managing a handful of platform threads. Thirty years later, Java 21 through 25 has transformed the language: records replace boilerplate classes, sealed interfaces model closed type hierarchies with compiler enforcement, pattern matching eliminates entire categories of unsafe casting, and virtual threads make a million concurrent tasks not just possible but routine.Modern Java Design Patterns bridges that gap. Every classic pattern is shown first in its original form, then systematically rebuilt with the language features that exist today. The result is code that is shorter, safer, more expressive, and immediately recognisable to any team working on a modern Java codebase.

  • Build Your Own Coding Agent

    J. Owen

    Skip the black-box frameworks. Build a production-grade AI coding agent from scratch in pure Python - cloud or local, tested with pytest, all in a single file.

  • Residues: Time, Change, and Uncertainty in Software Architecture.

    Barry M O’Reilly

    Residuality Theory is a new way to think about the design of software systems that explains why we experience design the way we do, why certain things seem to work only sporadically, and why certain architects get it right so often regardless of which tools they use. A new, scientific approach is defined that fuses Software Engineering, Complexity Science, and Philosophy to produce an entirely new way to think about how to design software. The result is a theoretical base that allows architecture to finally become its own discipline.

  • Advanced GPU Assembly Programming Second Edition

    gareth thomas

    Uncover the fundamentals of GPU architecture and assembly programming with Advanced GPU Assembly Programming, a resource designed for enthusiasts and professionals who want to explore the intricate workings of modern GPUs. This book is not a step-by-step manual but a gateway to understanding GPU architecture and assembly programming at a foundational level. It’s ideal for readers who are ready to invest their own effort to experiment and grow their expertise.

  • Be a Learning Machine

    Alberto Souza

    You’ll just need the Five Essential Elements of Learning Through five essential elements, you’ll gain the ability to learn anything deeply—no matter how complex the subject. These five pillars of effective learning will become lifelong tools, guiding you every time you set out to truly master new knowledge and retain it permanently. If you're ready to stop passively consuming information and start truly mastering it, this book is for you.

  • Reliable Generative AI

    George Tome

    Reliable Generative AI bridges business use and technical architecture. It teaches the foundations of prompt design, RAG, agentic workflows, tool use, structured outputs, safety patterns, and evaluation without assuming the reader is a software engineer. The focus is practical: understanding how AI workflows fail, how to design around those failures, and how to build systems that professionals can trust.

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Many books which regularly cost much more than $25 can be bought for just one credit, so a Reader Membership can save you money as well as getting you access to about 2000 books which are free with membership. So, the real question is: How many credits do you want?

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Top Books

  1. Фундамент архітектури
    База, якої вас ніколи не вчили
    Сергій Немчинський

    Чому проєкт-цукерочка через рік перетворюється на непідтримуване пекло? Тому що вас ніколи не вчили базі. Ця книга — єдина система координат, яка нарешті збере ваші розрізнені знання про ООП, GRASP, SOLID та GoF в одну цілісну картину.

  2. The SysML v2 Book
    Practical Insights and Comprehensive Reference
    Tim Weilkiens and Vince Molnár

    Learn SysML v2 with the ultimate guide for all skill levels in MBSE. Authored by insiders, it's your key to unlocking the full potential of system modeling and a passport to mastering your MBSE.

  3. CISSP: The Last Mile
    Your guide to the finish line
    Pete Zerger

    The book covers every topic in the latest CISSP exam syllabus, organized in a format that makes it easy to drill down on specific exam domains and concepts at-a-glance, making it an essential exam resource for anyone who aims to prepare for the exam without wasting time or money.

  4. OpenIntro Statistics
    Includes 1st, 2nd, 3rd, and 4th Editions
    OpenIntro, Christopher Barr, Mine Cetinkaya-Rundel, and David Diez

    A complete foundation for Statistics, also serving as a foundation for Data Science. Leanpub revenue supports OpenIntro (US-based nonprofit) so we can provide free desk copies to teachers interested in using OpenIntro Statistics in the classroom and expand the project to support free textbooks in other subjects. More resources: openintro.org.

  5. Logic for Programmers
    Hillel Wayne

    Not just for mathematicians and detectives! Learn the basics of logic and its many applications, including advanced testing, constraint solving, function composition, and code proofs. Over 50 exercises and 20 sample programs are included. No prior math background required!

  6. Mastering STM32 - Second Edition
    A step-by-step guide to the most complete ARM Cortex-M platform, using the official STM32Cube development environment
    Carmine Noviello

    With more than 1200 microcontrollers, STM32 is probably the most complete ARM Cortex-M platform on the market. This book aims to be the most complete guide around introducing the reader to this exciting MCU portfolio from ST Microelectronics and its official CubeHAL and STM32CubeIDE development environment.

  7. The Hundred-Page Language Models Book
    hands-on with PyTorch
    Andriy Burkov

    Master language models through mathematics, illustrations, and code―and build your own from scratch!

  8. Super Study Guide: Transformers & Large Language Models
    Afshine Amidi and Shervine Amidi

    A clear, illustrated guide to large language models, covering key concepts and practical applications. Ideal for projects, interviews, or personal learning.

  9. Clarity Forge : Local coding agent done right
    An OpenSpec × Grill Mini Book
    Volodymyr Pavlyshyn

    Monday morning. You typed "add multi-tenancy to the billing service" into Claude Code. Eight hours later: forty-three files touched. Half the tests yellow. You cannot explain to your tech lead what was decided, by whom, or against which constraint.The code looks fine. The intent is gone.The Clarity Forge is the antidote — a small, opinionated pipeline that forces every fuzzy idea through explicit spec, structured interrogation, and tailored artifacts before a single line of production code is written.Six stages. Six copy-paste prompts. One iron rule:The spec is the durable artifact. The code is the side effect.Pairs the frontier-grade Architect (Opus, GPT-5, Sonnet 4.6+) with a local Contractor (Gemma, Qwen). Pairs OpenSpec's directory convention with the Grill skills that surface ambiguity before it metastasises into code.A weekend read. A Monday-morning toolkit. Worked example included.Stop vibe-coding. Start clarity-trading.

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Featured Leanpub Bundle

Enterprise AI Agents in Production: Build and Secure Them

Two practical books for teams building enterprise AI agents in production. Start with Claude Code, tools, MCP, evals, observability, and production agent workflows. Then secure those agents with bounded autonomy, AgentSecOps, RAG governance, identity controls, audit evidence, and regulatory readiness.

The following 2 books are included in this bundle...

  1. Securing Enterprise AI Agents
  2. Claude Code: Building Production Agents That Actually Scale
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Top Bundles

  1. Modern GPU Architecture and Programming Complete Bundle
    gareth thomas

    A 7-book GPU collection covering architecture, CUDA, assembly, PTX, SASS, and parallel computing. Learn how to move from high-level programming to low-level execution and optimize performance across modern GPU systems.

  2. Compose & Android Deep Dive Package (Jetpack Compose internals + Manifest Android Interview)
    Jaewoong and Jorge Castillo

    Jetpack Compose internalsThis book explores the guts of Jetpack Compose, the brand new library by Google and the Android team that will become the future of Android UI. Dedicating time now to learn about its internals in-depth will yield powerful skills to write modern and efficient Android apps in the future. If you are interested in other use...

  3. The Open Geospatial Python Series
    Qiusheng Wu

    Learn geospatial Python from the ground up to advanced GeoAI. Build real-world workflows for GIS, spatial data management, and AI-powered analysis.

  4. Modern C++ Collection
    Rainer Grimm

    Get All about Modern C++C++ Standard Library, including C++23Concurrency with Modern C++, including C++23C++20Each book has about 200 complete code examples. Updates are included. When I update one of the books, you immediately get the updated bundle. You can expect significant updates to each new C++ standard (C++23, C++26, .. ) and also...

  5. Enterprise AI Agents in Production: Build and Secure Them
    Thomas De Vos

    Two practical books for teams building enterprise AI agents in production. Start with Claude Code, tools, MCP, evals, observability, and production agent workflows. Then secure those agents with bounded autonomy, AgentSecOps, RAG governance, identity controls, audit evidence, and regulatory readiness.

  6. Modern Thymeleaf Bundle
    Wim Deblauwe

    ? Exclusive Offer: Master Spring Boot & Thymeleaf Like a Pro! Dive into the world of modern web development with our special bundle, featuring two essential guides: Taming Thymeleaf and Modern frontends with htmx. ? Why This Bundle?Comprehensive Learning: Start with Taming Thymeleaf to build a solid foundation in Spring Boot and Thymeleaf,...

  7. C++20, C++17, and Move Semantics
    Nicolai M. Josuttis

    C++20, C++17, and MoveSemantics - The Complete Guides

  8. Residues and The Philosophy of Software Architecture
    Barry O’Reilly

    This bundle includes the books “Residues: Time, Change and Uncertainty in Software Architecture” and “The Architect’s Paradox: Uncertainty and the Philosophy of Software Architecture” by Barry M O’Reilly. The books complement each other, with Residues giving a practical description of how to apply residuality theory and The Architect’s Paradox...

  9. Windows 10 System Programming
    Pavel Yosifovich

    Windows 10 System Programming books (part 1 and part 2)

Interviews with Leanpub authors and special guests

The Leanpub Podcast

Hosted by Leanpub co-founder Len Epp

In The Leanpub Podcast, Leanpub co-founder Len Epp interviews authors and special guests about their lives & careers, their areas of expertise and the issues of the moment, and their experiences as writers. Every episode is deeply researched and covers areas that are equally of human interest, general interest, and professional interest.
Featured Leanpub Podcast Interview

Danielle Boyce, Author of Ten Habits of Great Data Analysts

Episode: #331Runtime: 58:18Released: 2026-06-01

Dr. Danielle Boyce - In this episode of the Leanpub Podcast, Len Epp interviews Dr. Danielle Boyce, author of Ten Habits of Great Data Analysts: Practical Tips from My Three Decades in the Field. Danielle shares lessons from a career spanning public health, biomedical informatics, and data science, discussing what separates great analysts from merely technical ones. They explore communication, curiosity, collaboration, data storytelling, career development, and the human side of analytics, along with Danielle’s experience writin

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Featured Leanpub Course

Top Courses

  1. Stratospheric - From Zero to Production with Spring Boot and AWS
    Hands-on online course to learn all you need to know to get a Spring Boot application into production with AWS.
    Philip Riecks, Björn Wilmsmann, and Tom Hombergs

    Hands-on online course to learn all you need to know to get a Spring Boot application into production with AWS. Visit our landing page for a tour of the contents. Make sure to get familiar with all available bundle options before enrolling.

  2. The Hundred-Page Language Models Course
    Andriy Burkov

    Master language models through mathematics, illustrations, and code―and build your own from scratch! This course includes nearly three hours of exclusive video interviews with the author, covering questions related to each of the six lessons included in the course.

  3. Generative AI in a Nutshell
    How to Survive and Thrive in the Age of AI
    Henrik Kniberg

    This is a fast-paced, practical, and visual guide to the strange new world of Generative AI. It is like an extended version of Henrik's viral video with the same name.

  4. Patterns of Application Development Using AI
    Obie Fernandez

    Unlock the power of AI in your applications with this groundbreaking course on AI-driven application architecture. Discover practical patterns and principles for building intelligent, adaptive, and user-centric software systems that harness the potential of large language models. This course includes exclusive video interviews with the author.

  5. Microservices Masterclass
    David Farley and CourseAI

    Microservices are a great approach for building software at scale. But although the ideas at the root of microservices may sound simple, this is not a simple approach. There are several big traps along the way, and it's important to avoid them...

  6. Manifest Android Interview Course
    The ultimate guide to cracking Android & Compose technical interviews.
    Jaewoong

    To ace your next Android developer job interview, focus on truly understanding the concepts, not just memorizing answers, and practicing how to apply them. With over 250 quiz questions, 370 practical and follow-up questions with full answers, and 60+ pro tips, this course helps you sharpen skills, understand the why, and prepare for real-world technical challenges. ISBN: 979-8285926436

  7. Practical Kotlin Deep Dive Course
    Unlocking the 'How' and 'Why' behind Kotlin fundamentals and internal mechanisms.
    Jaewoong

    Takes you from "how to use Kotlin" into "how Kotlin really works," revealing internal implementations, demystifying bytecode and compiler behavior, and uncovering the internals that shape the language. With hands-on Code Playgrounds for immediate practice and 158 interactive assessments to test and reinforce your understanding, this course doesn't just show you why everything is the way it is, it challenges you to prove you've mastered it.  ISBN: 979-8243872744 

  8. Machine Learning Made Simple
    8 Pillar Machine Learning Algorithms in Python
    Finxter and Lukas Rieger

    This course gives you an intuitive understanding of the eight most important machine learning algorithms. It helps you get started using them in your own projects NOW -- in a single line of Python code. After finishing this course, you'll be able to select, understand, and implement the top 8 machine learning algorithms in your own projects.

  9. The Kubernetes Course
    Nigel Poulton

    This course is based on the 2025 edition of the best-selling Kubernetes book, that has been fully updated for the latest versions of Kubernetes and the latest industry trends. You won't find a better and more up-to-date book-based course on Kubernetes. Hand-crafted over the past 8 years by best-selling author Nigel Poulton.

Featured Leanpub Track

7 Course-Bundle: Shut Up and Code Python + PyCharm + Coding Interview + Machine Learning + One-Liners + Regex + Lambdas

"Shut up and code." Laughter in the audience. The hacker had just plugged in his notebook and started sharing his screen to present his super-smart Python script. "Shut up and code" The letters written in a white literal coding font on black background was the hackers' home screen background mantra. At the time, I was a first-year computer...

This track includes the following 7 courses...

  1. Machine Learning Made Simple
  2. The Smartest Way to Learn Python Regex
  3. Learn Python the Practical Way [Coding Interview Exercises]
  4. Python Exercises Collection
  5. Python Lambdas Deep Dive
  6. Your Python One-Liner Superpower
  7. The Complete Guide to PyCharm
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Top Tracks

  1. AI Masterclass
    Henrik Kniberg, Obie Fernandez, and Andriy Burkov

    About the Track: AI Masterclass Artificial Intelligence is reshaping the way we live, work, and build technology. The AI Masterclass Track brings together three powerful courses from world-class experts to give you a comprehensive, practical, and hands-on education in the age of AI. Whether you want to understand the big picture, apply AI...

  2. 14 C# Courses Bundle
    EngineerSpock

    Taking this bundle, you'll get a comprehensive set of courses that cover almost the whole surface of the .NET framework.The big topics that are covered:WPFMVVMSpecFlow and SeleniumLINQMultithreading and Parallel ProgrammingC# in Depth: Puzzles and GotchasAlgorithms and Data Structures in C#VS and R#and engineering practices:Unit Testing with...

  3. Kotlin for developers
    Marcin Moskała

    This is the complete track to learn about essential Kotlin features and get ready for working in Kotlin in daily basis. It starts from essentials, and on the way reaches advanced topics like efficient collection processing or DSL creation.

  4. Senior Android Developer Interview Prep Track
    Jaewoong

    Senior Android interviews test real understanding, not memorized answers. This track goes beyond “how to use Kotlin” into how Kotlin and Android actually work under the hood, including compiler behavior and internal concepts. With hands-on playgrounds and 400+ quiz and interview-style questions, it helps you practice reasoning through problems and confidently tackle senior-level technical interviews.

  5. 7 Course-Bundle: Shut Up and Code Python + PyCharm + Coding Interview + Machine Learning + One-Liners + Regex + Lambdas
    Finxter, Lukas Rieger, and Shubham Sayon

    "Shut up and code." Laughter in the audience. The hacker had just plugged in his notebook and started sharing his screen to present his super-smart Python script. "Shut up and code" The letters written in a white literal coding font on black background was the hackers' home screen background mantra. At the time, I was a first-year computer...

  6. Real World Python
    Lukas Rieger and Finxter

    Learn Python the Practical Way - In this course you learn all the basics of the Python programming language. It contains exercises, explanatory videos, an example solution and a quiz. This will enable you to apply your skills to a wide range of real world problems.A collection of more Python exercises - Exercises with solutions to continue...

  7. A Simple Path to Python Success
    Finxter, Lukas Rieger, and Shubham Sayon

    Python is the fastest-growing major programming language on the planet. This practical course set will teach you Python in a hands-on, highly practical way that guarantees your success. All you need to go from zero to completing your own Python projects in a relaxed, student-centric, and fun environment. Create yourself a new skill that'll bring...

  8. Design and Architecture Fundamentals in C#
    EngineerSpock

    Taking this course bundle, you'll learn:SOLID principles (SRP, OCP, ISP, LSP, DIP) in-depthMeta principles: DRY, KISS, YAGNI, SoC, CQS, Law of Demeter, PoLADependency Injection in Depth: IoC or DI containers, best practices, and anti-patternsFunctional Programming in C#: purity and side effects, functional C# features, immutability,...

  9. Game Studio Starter Kit (6 Game Collection)
    Stephen Gose

    This is the perfect Game Studio starter kit for launching your online dream business. This kit contains 6 tutorials books to help you create 9 different online game mechanics. You could have all 9 games ready in a day for each game. Start your Game Studio today.

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Leanpub has already paid out $15,452,842.65 to authors. Whether you write in Markdown or upload PDF/EPUB files, Leanpub’s intuitive publishing tools simplify the process. Use our in-browser editor or sync with GitHub or Dropbox and publish your ebook with a single click. Plus, you decide when to release—during the writing process or upon completion.

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As an academic, I like Leanpub because it lets me write and get my ideas out there quickly. Leanpub is simply the best place for publishing my books.

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We're authors too, and we built Leanpub to be the platform we would love to use. It turns out, we weren't alone...

  • As an academic, I like Leanpub because it lets me write and get my ideas out there quickly. Leanpub is simply the best place for publishing my books.

    Roger D. Peng
    Associate Professor of Biostatistics at the Johns Hopkins Bloomberg School of Public Health

  • Leanpub's book-creation tools allowed me to focus on creating the types of books I wanted to write instead of worrying how to create my own book publishing toolchain. I have never regretted using Leanpub to publish my ebooks.

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    The Grumpy Programmer

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    Author, Multitenancy with Rails

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    Creator Of Laravel

  • Leanpub is a game changer for independent authors, removing the hassles associated with formatting, book production, and electronic sales, freeing up the time to do what we do best: write.

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    Author, Easy Laravel 5

  • Leanpub helped me achieve my goal of publishing a book. Its simple, easy to use interface got my book up and making money within weeks, I love Leanpub!

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    Author, Everyday Rails Testing with RSpec

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    Growing Agile

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    Paul runs the MA in Online Journalism at Birmingham City University

  • Leanpub allows me focus on content, takes care everything else and offers an amazing author royalty. It’s a fantastic platform for writing and publishing books.

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    Author, Trello Dojo

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    Author, Ansible for DevOps

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