Yeah, I can. Even it isn’t perfect yet, I’ve improved a lot in the last years. I learned everything by myself by listening, reading and talking, never paid to learn. Actually I keep my studies learning new words using apps like Wordup and listening to podcasts in English in order to improve my understandings of spoke english in conversations and, not less important, reading books and articles in english. Other good tip is to find a good English Exchange group and talk with native speakers. I met an american that helped me a lot in my english. We talked every week for at least 2 years. I was teaching him Portuguese while he was teaching me english, this was very important to increase my english skills. Finally, learn english (and another languages) is a lifetime project and not a race. The key is to expose yourself to the language, preferentially consuming contents of topics that you really like. And you don’t need to search for perfection, this will only mess you up! Is your goal to learn english?