you don't really need to review... but if your registered with British Council, you can use their facilities (at the Taipan 10F ofc, ortigas) anytime for free.(just be sure to bring a jacket with you!) or just buy cambridge ielts 6 and other books from prc. another privilege from british council is the free 30 hours of Road to IELTS, but i found a site where the full version is accessible. Road to IELTS Academic from Clarity and the British Council
IELTS is a pretty easy exam. just take note of the tips that you'll find fro books. how to write your essay and how to answer in the interview. my tip for the listening test- watch a lot of movies, from the UK (e.g. love actually, imagine me and you) and just listen to the listening practice tests on ur ipod, even if you're not taking a test. just keep listening until the day of your test. follow my advice: don't enroll yourself anymore and waste your money in the review centers. you'll do just well. goo dluck!