First you have to improve your vocabulary. With a strong vocabulary Learning will be more easy and interesting. There are sites providing you help in Learning English, you may consult, or you can hair a Teacher, to provide you lessons On-line.

There are many ways. This italki site will help you http://www.italki.com/knowledge/page/Spoken%20English.htm

There's a good book called Discussions from A to Z. Unfortunately, I don't remember the author(s). Surf the net and you'll find it. So if you have a language partner, you can use it to have something to talk about)))