AI Basics You MUST Understand Before Building AI Agent

Many developers are jumping directly into AI agent frameworks like: LangChain CrewAI LangGraph But without understanding the foundations first, things quickly become confusing. Concepts like: LLMs Tokens Context windows Embeddings RAG APIs are the real building blocks behind modern AI systems. So in this tutorial, I simplified the core AI concepts every beginner should understand before building AI agents. 1. What Is an LLM? LLM stands for Large Language Model. Models l...