There's ~50 short exercises/lessons here: https://learnrubythehardway.org/book/ https://learnrubythehardway.org/book/ I did them when I started out, and occasi

There's ~50 short exercises/lessons here: https://learnrubythehardway.org/book/ https://learnrubythehardway.org/book/ I did them when I started out, and occasionally revisit as a refresher. It doesn't teach everything in ruby, but it absolutely gives enough to do just about anything you could want.