Someone in China uploaded and ENTIRE IELTS oral course on the internet! Here is the first video. The instructor speaks very quickly, but I watched the first lesson (about one hour) and found a number of good tips that will also be helpful for you. The instructor occasionally refers to some textbook. I am not sure what textbook this is but I do not feel it is necessary to have this to understand what she is talking about.
For the rest of the videos (over 8 hours), check out – http://www.youku.com/playlist_show/id_819090.html