Start here
Start with the agent design overview, then try a prompting tutorial. Choose one resource and check what you learn on a small task.
10 resources
Agents and harnesses
AGENTS.md
by AGENTS.md (multi-vendor open format)
Open format for a repo instruction file that coding agents read.
Building Effective AI Agents
by Anthropic
Workflows vs agents and the core patterns; argues to start simple. Readable without code.
AI Agents Course
by Hugging Face
Free course from 'what is an agent' to building one.
A practical guide to building agents (PDF)
by OpenAI
Plain-language foundations: when to build an agent, orchestration, guardrails.
Prompting
Interactive prompt engineering tutorial
by Anthropic
Hands-on notebook course: you edit prompts and see results, no coding needed.
Prompt engineering overview (Claude docs)
by Anthropic
Official starting point for prompting Claude, with links to each technique.
Prompt Engineering Guide
by DAIR.AI
Broad, frequently updated reference of named prompting techniques.
Prompt design strategies (Gemini API)
by Google
Google's official prompting guide with clear before/after examples.
Learn Prompting
Free structured course for people with no technical background.
Prompt engineering (OpenAI API docs)
by OpenAI
OpenAI's official baseline on message roles, instructions and examples.