The default guide for a long time was the Pickaxe book, which solidly pre-dates the availability of 10-minute videos by several years. There are a fair few links here that you might find useful: https://www.ruby-lang.org/en/documentation/

There's ~50 short exercises/lessons here: 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.