Anki is a spaced repetition flashcard tool designed to facilitate maximally effective retention of structured data. It’s very good at its job. While the primary audience is medical students cramming for exams, you can also use Anki to learn facts about the world which are various degrees of useful or impressive, ranging from party tricks to navigational information and communication aids.
Download the .apkg for the deck you want. Then, in Anki, choose File > Import and open the downloaded file. You can rename the imported deck or move its cards if you prefer your own organisation. When updating a deck, leave Import any learning progress disabled. See Anki’s guide to packaged decks for details.
The source files and deck details are on GitHub.











