https://anthropic.skilljar.com/ They've got courses covering everything from Claude basics to building with the API, Model Context Protocol, and even AI fluency for different roles (students, educators, nonprofits). Great starting points: • Claude 101 — perfect if you're newer to AI • Building with the Claude API — for the builders in here • Introduction to MCP — if you want to connect Claude to external tools All free, straight from Anthropic. Worth checking out.