For people who don't want to follow the author down the unnecessarily loquacious dive into matrices etc., but like me are interested in techniques for self-lear

For people who don't want to follow the author down the unnecessarily loquacious dive into matrices etc., but like me are interested in techniques for self-learning, here is a wiki article on what spaced repetition is https://en.wikipedia.org/wiki/Spaced_repetition https://en.wikipedia.org/wiki/Spaced_repetition He said he uses this application to do spaced-repetition learning https://apps.ankiweb.net/ https://apps.ankiweb.net/