Hi prassu , First you have to know which English accent you want to learn ,then be careful in choosing your language partner ,better a native speaker of English speaking the accent you want to learn . Your partner could correct your mistakes ,You can ask him/her for new words to learn ,when they write or speak they will say words you don't know ,so ask them for it . This continual interaction with the suitable partner could help you increase your vocabulary , speak with a better accent and you would be improving on the long run ,if you constantly chat and exchange your language knowledge, good luck :)

Just click on your friends photo and then click on "Chat Now" in his profile.

i don't know