How to study english

chatting is not a good way, because you will find it is a tough job for you to access a foreigner.

I suggest you had better visit english news website sometimes, such as http://www.cnn.com or explorer the things that you are interested in, which would make you more energetic surfing on internet.

I think you should listen lots of English music, you can learn from those music.
Why don't you read some English books?
Watching English film is also a good way to learn English.