Aside from that, what boosted my learning (As I never really did any exercises) was learn songs I liked, really easy songs, in example when I heard another kind of music I learned Toxicity by SOAD, it seriously helped me out to learn another songs, and so on.
Although I would not suggest it if you're going to actually learn it and not just play with it, I can play songs and whatnot but I don't know scales, etc. :P