One of the most suitable and best selling books for IELTS test preparation is this book. All files needed by students at all levels can be downloaded for free:

MINDSET For IELTS Foundation

MINDSET_For_IELTS-SB-Foundation.pdf

MINDSET_For_IELTS-Foundation-Software.rar

MINDSET-FOR-IELTS-FOUNDATION-TEACHERS-BOOK.pdf

MINDSET For IELTS 1

MINDSET_For_IELTS-SB-1.pdf

MINDSET_For_IELTS-1-Software.rar

MINDSET-FOR-IELTS-LEVEL-1-TEACHERS-BOOK.pdf

MINDSET For IELTS 2

MINDSET_For_IELTS-SB-2.pdf

MINDSET_For_IELTS-2-Software.rar

MINDSET-FOR-IELTS-LEVEL-2-TEACHERS-BOOK.pdf

MINDSET For IELTS 3

MINDSET_For_IELTS-SB-3.pdf

MINDSET_For_IELTS-3-Sodtware.rar

MINDSET-FOR-IELTS-LEVEL-3-TEACHERS-BOOK.pdf