What problem does it solve? Course summaries tell you what a teacher said but not whether you can actually do the work. This Skill compiles raw learning materials into an interactive course Skill that cites sources, teaches concepts progressively, checks understanding with questions, gives targeted feedback, and verifies you can apply methods independently in new situations. ## Core Features & Use Cases - Source-grounded course compilation: Processes video, audio, PDFs, scanned handouts, Markdown notes, and existing transcripts into a traceable course package where every important claim links back to its original passage, timestamp, or keyframe. - Apprenticeship-style coaching: Teaches one concept at a time with plain-language explanations and ASCII/SVG visuals, presents two formative questions together, evaluates each answer, schedules review, and tests transfer in unseen scenarios. - Private learner state: Keeps attempts, mistakes, revisions, and real-world results in an external private store, separate from the generated Skill, with explicit approval required before promoting personal methods. - Use Case: Point it at a folder of recorded lectures and slides, confirm your learning goal, and receive an enabled course Skill that runs baseline checks, micro-lessons, practice tasks, and graduation assessments. ## Quick Start Ask your AI assistant to use lineage-skill to inspect your course folder, report what materials were found and what is missing, then build and enable a course Skill so you can start the first lesson.