On the right of a concept page, add flashcards or questions to your queue so you can test yourself on related content.
Quiz yourself on the flashcards and questions you added using the flashcard, question, and spaced repetition icons in the upper right:
You can also add Flashcards and Questions from within your course slides:
You can also save all the flashcards or questions created within a workspace folder using this interface:
To review questions or flashcards you've missed try custom repeat options: