The Rust programming language has an incredibly steep learning curve: to write their first program a new Rust programmer has to make a significant upfront investment in becoming familiar with a large amount of syntax and gaining an understanding of the concepts underpinning the language (some of them unique to Rust). Most books are structured as an introduction to Rust's syntax, data structures, and functions, illustrating each with unrealistic examples. Each chapter in Rust From the Ground Up examines the original BSD sources for a well-known Unix CLI program and introduces enough Rust to incrementally build a fully functional copy. This practical approach gradually teaches the reader how to write real world code in idiomatic Rust, without overwhelming them with advanced language concepts such as lifetimes. This book flattens Rust's learning curve, showing you how to build powerful applications that can handle realistic conditions such as edge cases and errors. Every new Rust programmer should read Rust From the Ground Up first, enabling them to build intuition and gain confidence to continue their journey towards becoming an advanced Rust developer.