Prompt Engineering Interactive Tutorial

This is Anthropic's official curriculum for learning to prompt Claude well: nine chapters plus appendices, each with hands-on exercises and example playgrounds. It covers role assignment, XML structuring, separating data from instructions, few-shot examples, chain-of-thought, hallucination mitigation, and building complex prompts end-to-end.

Work through it in a Jupyter notebook or Google Sheets — a few focused hours here upgrades every prompt template you'll ever write.