Show HN: Tutor, a self-hosted LLM tutor that teaches you your books or docs

Reading does not always guarantee retention, especially for complex materials. So I created this tool that extracts the concepts and teaches them back to you (and then tests you as much as you need) so you can really learn the study material. This is a local project (hosted option coming soon) and it works for EPUB, PDF books or online HTML pages. AI API key needed (Luna or Haiku makes this efficient and very cheap).