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02. The Essentials of LangChain - Hello World Chain

Overview

  • Lessons: 12

  • Folder: 02-the-essentials-of-langchain-hello-world-chain

Lesson Map

  1. What is LangChain?
  2. What are we building? LangChain Hello World Chain
  3. Project Setup
  4. LangChain Fundamentals: Prompt Templates, ChatModels, and Chains
  5. Building a LangChain Chain to Summarize Text
  6. Debugging and Tracing Our LangChain Chain
  7. Using Local Open-Weights Models with LangChain and Ollama
  8. Integrating LangSmith for LangChain Application Tracing
  9. LangChain LCEL Fundamentals Quiz
  10. LangChain Model Switching: Groq API Integration
  11. LangChain Version in Course V1
  12. Which LLM to Use? (OpenAI, Gemini, Anthropic, Mistral, Llama)

Usage

Use this section index as your entry point, then capture detailed notes directly in each lesson page.