Learn to build a chatbot from scratch using Retrieval Augmented Generation (RAG) in this 20-minute video tutorial. Explore the implementation of OpenAI's gpt-3.5-turbo LLM through LangChain's ChatOpenAI class, while leveraging OpenAI's text-embedding-3-small for embedding and Qdrant vector database as the knowledge base. Access the complete implementation through the provided Jupyter notebook and utilize the Mistral-7B ArXiv paper dataset from Hugging Face to create a functional chatbot with advanced retrieval capabilities.