https://en.wikipedia.org/wiki/Spaced_repetition https://en.wikipedia.org/wiki/Spaced_repetition is supposedly very effective. Used in things like Duolingo for l

https://en.wikipedia.org/wiki/Spaced_repetition https://en.wikipedia.org/wiki/Spaced_repetition is supposedly very effective. Used in things like Duolingo for language learning. https://apps.ankiweb.net/ https://apps.ankiweb.net/ is a tool that implements it generically. Or, you can also do this with paper: https://en.wikipedia.org/wiki/Leitner_system https://en.wikipedia.org/wiki/Leitner_system