Your course materials → summaries + flashcards Second Brain turns PDFs and other study sources into a personal learning system. It generates revision-friendly summaries, creates thoughtful flashcards, and schedules reviews with spaced repetition so you retain more with less effort. Built by an engineering student to survive real university workloads. What you can do in 3 steps: Upload a PDF (or add another source) Get summaries + flashcards automatically Review daily with spaced repetition