The best way to learn it fast is to learn it slow. Do not rush as many languages need years of studying. There are many aspects of English that a student of the language has to learn just to get the gipse of it.

Read simple books first starting with those that have simple English words and slowly moving up to books that have more details. Talk to your friends in English and watch a lot of American films and television series.

Write more often. Google helps a lot too.