Build Your Own AI
verifiedPaidbuildown.ai
A developer-focused book teaching practical LLM app building—prompting, RAG, tool calling and agents—in framework-free TypeScript.
What it does
Build Your Own AI is a book written by a developer for developers on building real-world AI applications. It teaches core LLM concepts and patterns—prompt engineering, running models locally, RAG, tool calling, agents and basic fine-tuning—using plain TypeScript with no frameworks so ideas transfer to any language.
Core features
Fundamentals of LLMs and terminology
Running LLMs locally
Prompt engineering
Retrieval-Augmented Generation (RAG)
Tool calling and agents
Basics of fine-tuning
Framework-free TypeScript examples
Best for
→Learning to build LLM applications
→Understanding RAG and agents
→Prototyping without a framework
→Self-study for developers new to AI
Reviews
Big-picture takes: what it's for and whether it delivers. High-engagement YouTube videos — not sponsored.
Tutorials
Step-by-step: exactly how to get things done with it.