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Large language models power some of the most powerful software tools ever built, yet their inner workings remain mysterious to most developers. This book changes that. Starting from raw text and ending with a live inference API, you will build a complete LLM training pipeline from scratch using PyTorch. Every concept is explained clearly, every code listing is production-quality, and every chapter ends with hands-on exercises that cement your understanding. By the time you finish, you will understand tokenization, attention, positional encoding, transformer architecture, data curation, distributed training, fine-tuning, alignment, evaluation, and deployment at a level that no API wrapper can provide.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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