Book 1 of 11 · The RAG Mastery Series
The AI Engineer
Build a Production RAG System with Python, LangChain, and ChromaDB
Build ShopBot from scratch — a production RAG assistant that answers from retrieved evidence, not training memory. Ten chapters, one complete system.
What's inside — and what you'll be able to build
Each chapter adds something your system can do that it couldn't do before.
- PrefacePrefaceFree
- Chapter 1The Problem With Brilliant LiarsFree
- Chapter 2Before the First Line of CodeFree
- Chapter 3What 1536 Numbers Actually MeanFree
- Chapter 4The Memory That ThinksFree
- Chapter 5Cut It RightFree
- Chapter 6The Right Answer Is Already ThereFree
- Chapter 7The Prompt Is the ProductFree
- Chapter 8Give It a DoorFree
- Chapter 9Four Questions Is Not a TestFree
- Chapter 10Ship ItFree
Book 1 — Free, always
Every chapter. No account. No catch.
Most people decide in Chapter 1. If it doesn't show you something your current system is doing wrong, you're welcome to leave. We're confident you'll stay.
Start Chapter 1 →The RAG Mastery Series
Core Books
Book 1
The AI Engineer
Book 2
The Applied AI Engineer
Book 3
The Senior AI Engineer
Book 4
The AI Solutions Architect
Companion Series
Companion 4 · Nov 2026
The Agentic AI Engineer
Companion 5 · Feb 2027
The Forward Deployed AI Engineer
Companion 6 · May 2027
The MCP Developer
Companion 7 · Aug 2027
The Context Engineer
Companion 8 · Nov 2027
The AI Guardrails Engineer
Companion 9 · Feb 2028
The AI Automation Engineer
Companion 10 · May 2028
The Cloud AI Engineer