A lot of IELTS bokks for you:

G. Adams, T. Peck, "101 Helpful Hints for IELTS Academic Module (Book and Audio)"
Adams & Austen Press | 2006 | ISBN: 0957898061 | 176 pages, Audio | PDF, mp3 | 13+19,5 MB

"101 Helpful Hints for IELTS – Academic Module has been designed for students preparing for the Academic version of the IELTS exam and to assist teachers conducting courses in IELTS exam preparation.
The practice tests are written in the current IELTS exam format, and increase in difficulty as students progress through the book. The book offers much more than the four practice tests included.

"101 Helpful Hints for IELTS – Academic Module includes an extensive Help Section, covering the four Sub-tests of the IELTS exam.

The unique format of the book enables students to complete the first practice test and review their performance before attempting the next test. This is achieved by linking each hint to the appropriate pages of the practice test, so that students can easily identify problem areas and understand why they may have made errors.

The 101 helpful hints provide information to familiarise students with the IELTS exam format and the types of questions involved. They also offer practical guidance with clear reference to the practice tests to help students learn from their errors, as well as advice about further practice that can be of use.

IELTS (International English Language Testing System)