Show HN: LessonFolk – Learn AI from an AI tutor, through MCP (open source)

LessonFolk is a free, open-source site that teaches AI through short conversational lessons with an AI tutor inside the AI chat app you already use, tracking your progress. It offers 15 courses in a recommended order, from AI Foundations to How AI Models Really Work and Context Engineering for Long-Running Agents, with a short level check to skip what you already know. The courses and code are open source, and users can download or delete their data at any time.