Spaced Repetition software
on iOS I use an app called "CleverDeck"
I've even put sight-words and dolce-words in there for my youngest child to learn from (she's learning to read)
Another child has a copy of clever deck she used for finally solidifying her knowledge of the "times tables" she couldn't quite get clear in her mind. 78, 1112, and a few like that.
With clever deck you can quickly add your own cards.
Topics to gather
- Basic strategy for 21
- Birthdays of people I know
- Children's names of friends
- Bash commands
- Ubuntu paths
- Guitar chords
- Guitar scales
- git commands
- interesting words
(See cheatsheets)