Although the question is not directed at me, I've found exercise websites to be extremely valuable. I value learning/gathering experience by reading code, but I find the hands-on approach more stimulating.
My favourite resource right now is exercism.io. Although some tracks have too much of a high students/mentors ratio to be effective/practical in mentored mode (or to activate the mode at all), going through all the exercises (and community solution) is still a very effective way to learn a language (along with a textbook, of course).
Codewars is another interesting idea, however, it's much more grounded on computer science, which is not very well suited to just learning a language.
My favourite resource right now is exercism.io. Although some tracks have too much of a high students/mentors ratio to be effective/practical in mentored mode (or to activate the mode at all), going through all the exercises (and community solution) is still a very effective way to learn a language (along with a textbook, of course).
Codewars is another interesting idea, however, it's much more grounded on computer science, which is not very well suited to just learning a language.