Best video to rag

Why this one

This video is the ideal starting point for beginners, balancing clear high-level concepts with a modern project walkthrough. It explains core RAG components—chunking, embeddings, and vector databases—before building an end-to-end telecom chatbot using LangChain, Chroma DB, and Grok. Additionally, it breaks down vector, vectorless, and hybrid RAG patterns in an approachable 14-minute lesson published in May 2026.