LessonFolk is a free, open-source project that teaches people about AI by letting them talk with an AI tutor. Rather than hosting its own assistant, the service connects through MCP to the AI chat application a learner already uses, while the LessonFolk site tracks progress. The project was presented on Hacker News as a Show HN post on 12.11.2026.
Getting started involves creating an account and linking an existing AI app, a process the site says takes a couple of minutes. The tutor then asks a few questions about the learner's background and current knowledge to recommend a starting point. Each lesson takes the form of a conversation in which the tutor checks the learner's understanding.
The platform lists 15 courses arranged in a recommended order, spanning beginner material through advanced topics. Three are described in detail:
- AI Foundations starts from zero, covering what AI is, how machines learn, and what happens when a user chats with an AI. It takes about one hour across three lessons.
- How AI Models Really Work examines the model behind a chat assistant: how text becomes tokens, how meaning becomes numbers, how training turns a text predictor into an assistant, what reasoning models add, and how to choose a model. It requires no code or math and runs about one and a half hours over six lessons.
- Context Engineering for Long-Running Agents covers keeping an agent effective over hours of work, including treating the context window as a budget, compacting history without losing the thread, keeping memory outside the window, and delegating to sub-agents when useful. It takes about two hours over six lessons.
The project positions its conversational format as an alternative to video courses, letting learners ask questions and move at their own pace, and uses a short level check to skip material the learner already knows. Both the courses and the code are open source, and users can download or delete their data at any time.