Learning a language

I think learning a language is much more about reading news, articles, listening to music, hearing talks and trying to communicate in any way, than about sitting in a class and just hearing the teacher speaking [better as "listening to the teacher"]. Of course, if you want to learn the grammar, you need a higher level of dedication and a couple classes, but if you just want to be able to communicate, maybe the best way is doing things you like. Learning a new language is awesome, and it can even become a hobby. It's hard to start thinking in another language, and maybe it's possible only [this would sound more natural as "only possible"] after a long time. 

Isso é muito bem feito, parabéns! I have corrected mistakes in yellow and made some suggestions for improvement in blue