want to tell you that actually it is not that difficult to learn english well as long as you find out the effective way to learn it.
i have some suggestions for you.as you know,english sentences are the words connected by grammar.Therefore,you should start from accumulating vocabulary and understanding grammar.
books are the best source of vocabulary because a single word is kind of dull but if you put it in a story or an essay,it becomes vivid and you will automatically remeber it sometime.Forthermore,by reading books,you can access to nearlly all kinds of sentence structures when(at that time) you have got great opportunities to get acquainted with some of them by maybe analyzing,comparing.
anyway,i hope to hear good news for you