[bulldog13]

I use SuperMemo https://super-memo.com/ for memorizing things. It uses spaced repetition. It has a bit of a learning curve, but once you figure it out, very effective. I feel like I have seen an article on HN about it before.

[pleasejustdont]

Probably this one : Augmenting Long-term Memory http://augmentingcognition.com/ltm.html