Cambridge IELTS 6 Student's Book with answers: Examination papers from University of Cambridge ESOL Examinations
Cambridge IELTS 6 provides students with an excellent opportunity to familiarise themselves with IELTS and to practise examination techniques using authentic test material prepared by Cambridge ESOL. Each collection contains four complete tests for Academic candidates, plus extra Reading and Writing modules for General Training candidates. An introduction to these different modules is included in each book, together with an explanation of the scoring system used by Cambridge ESOL. A comprehensive section of answers and tapescripts makes the material ideal for self-study.
This book is precisely what it claims to be: a collection of 4 IELTS tests with answers. There is no CD-ROM (so if you want to do the listening part you need to also purchase the CD).
In other words, there are no grammatical rules explained, no ramping-up activities, no tips for the actual test, and no strategies on how to optimize the performance in the 4 parts of the test. For all these reasons, this book is absolutely not enough for passing the actual exam.
Even if your grammar is stellar (and you need no book about it) and your listening skills are wonderful (and you need no CD-ROM), you will still need to learn the best strategies in that the IELTS exam format places *heavy* time constraints on you! I suggest "Action plan for IELTS" for finding some neat strategies.
Furthermore, I find the tips inside "Step up to IELTS" just great. A student needs to know (for example) that, as far as what the IELTS examiners are after, it is better to try to use a complex sentence and fail at it than write/speak in simple sentences.