Learn RAG From Scratch – Python AI Tutorial from a LangChain Engineer
freeCodeCamp.org 2h 33m EN published 2024-04-17
Why LearnPath recommends it
Two and a half hours from a LangChain engineer that go well past naive RAG — query rewriting, routing, multi-index retrieval, re-ranking — with runnable notebooks. The technical depth layer after a first RAG course.
Editorial review dimensions (1–5), assigned by LearnPath editors — not a computed score. Last reviewed 2026-09-12.