thanks for giving me a tips. I'll try my best and i hope not to give up too early. :-).

I think your post looks quite good. Even if it takes long time to write it right, keep on doing it and you will start writing faster and better. From what I hear the best way to study new language by yourself is to start with basic words and sentences and learn grammar. Then start reading whatever books, news, blogs, and so on. Knowing basic grammar and vocabulary will allow you to start off. The more you read, the more your vocabulary will expand and the more constructs you will remember. You should also try writing compositions regularly at the same time. A diary is a good way. As for which words to learn first, you probably can get some introductory self-study book and learn vocabulary they give you. It will be a mix of nouns, verbs, adjectives, and so on, in the amount necessary for basic understanding.

In order to improve, you must make mistakes and not be afraid. Although it is painful to be criticized, one must get over the negative feelings and realize this is part of the learning process. Don't worry about it, accept your English will be imperfect and learn from it.