Hi , you can help yourself by reading a lot of English books . You begin by reading beginner
books then the next level and so on . Of course you can ask the help from native English speakers as well . They are really willing to help if they have free time . You can watch CNN and TV American movies and so on . Listen to the radio such as the BBC . I'm not a native English speaker but I can help you with what I know :) . Google.com be with you ;) .