Chess apps for learning

Free, open source, and no ads. The best place to play against other humans, and its analysis board is a great way to go through your games afterwards.

Build an opening repertoire that fits how deep you actually want to go, then drill it with spaced repetition until the moves come naturally.

A huge database of themed tactics puzzles with human curation via ratings and tagging. Old-school interface, serious training value.

The classic tactics course, based on Maxim Blokh's Combination Motifs. Thousands of hand-picked exercises in a carefully thought-out order.