(Adding to what you wrote.) Since you mention that it's not just for vocab, here's an extensive article on how to formulate knowledge in general that goes into

(Adding to what you wrote.) Since you mention that it's not just for vocab, here's an extensive article on how to formulate knowledge in general that goes into a spaced repetition system. (There is also a summary at the bottom.) http://www.supermemo.com/articles/20rules.htm http://www.supermemo.com/articles/20rules.htm It's part of a site for a closed-source client, but Anki[1] is a good open-source one. [1] http://ankisrs.net/ http://ankisrs.net/