What sites/apps/etc. do you usually use when you study, language learners?

[waruvial]

I have a list of free, online educational resources here, which includes foreign language sites/apps too.

I don't mind taking suggestions on what to add or seeing what's popular among my DW peeps.

Comments

[chaosklutz]

I have been using Drops and Duolingo. Otherwise I have been teaching myself Hebrew through a Youtube channel run by a native speaker.