How to Build AI Apps, Agents & RAG Systems – Learn AI Engineering Step by Step 2026

Learn how to build real AI applications from scratch – even if you're just getting started. This step-by-step learning path takes you from writing your first prompt to deploying production-ready AI agents and RAG systems. Master the OpenAI API, Claude API, MCP and more.

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ChatGPT Prompt Engineering for Developers (DeepLearning.AI)Free
1h 30min
Prompt Engineering for ChatGPT – Vanderbilt University (Coursera)Free
Anthropic's Prompt Engineering GuideFree
Prompt Engineering Tutorial – Master ChatGPT and LLM Responses by freeCodeCamp.orgFree
42min
Building Systems with the ChatGPT API (DeepLearning.AI)Free
1h 45min
AI Engineering: Building Applications with Foundation Models by Chip HuyenPaid
LLM Engineering: Master AI, Large Language Models & AgentsPaid
33h 30min
Learn RAG From Scratch – Python AI Tutorial from a LangChain Engineer by freeCodeCamp.orgFree
2h 33min
RAG Explained For BeginnersFree
11min
Retrieval Augmented Generation (RAG) (DeepLearning.AI)Paid
ntroduction to RAG (Duke University)Paid
2h
RAG, AI Agents and Generative AI with Python and OpenAI 2026 Paid
38h 30min
AI Agents Full Course 2026: Master Agentic AI (2 Hours) by Nick SaraevFree
2h 14min
Anthropic MCP (Model Context Protocol) – Official DocsFree
Multi AI Agent Systems with CrewAI – DeepLearning.AIFree
2h 41min
Build an AI Agent from Scratch – Scott MossPaid
The Complete Agentic AI Engineering Course Paid
17h
Evaluating and Debugging Generative AI – DeepLearning.AIFree
50min
LLMOps – DeepLearning.AI & Google CloudFree
1h 21min
Hugging Face – Open Source AI Ecosystem (Models, Datasets, Spaces)Free
Designing Machine Learning Systems – Chip HuyenPaid