Folio needs JavaScript
Folio is a study companion: flashcards on history, science, geography and languages, brought back by spaced repetition just before you would forget them, with daily minigames, a glossary, an interactive atlas and a library of whole books to read.
It runs entirely in your browser, and your progress is kept on this device (and in your account, if you sign in). Please turn JavaScript on for this site and reload the page. If it is already on, a browser extension that blocks scripts is the usual cause.