Make a habit of reading regularly. Read as many English books, newspapers and magazines as you can get your hands on.

Reading should be fun, so make sure the texts you choose are not too difficult for you. If the book or article you are reading is a chore, then find something easier. Try reading graded books written especially for ESL learners. I've written a guide on how to choose a book here.

Find an author you like and read all their books. By doing this you will get used to the style of a particular author and the typical vocabulary and grammar they use. As you read more of his/her books you will find it easier and easier.

If you have a local library find out if they stock English books or if they have bilingual editions of English classics. Or ask them to stock English translations of books you are already familiar with.

Try reading things more than once. Read something and then read it again a few weeks/months later. You should find your understanding has improved.

Try to discuss a book you've enjoyed with other people. You can even discuss books with me on the forum, or there are lots of online book clubs and you can even write reviews on book selling sites.

Don't try to read "the classics". Save them for later, start with contemporary short stories. And don't forget, there are loads of excellent comics out there too. I actually started learning German by reading Winnie the Pooh