This book practices all parts of the JLPT N4 AND N5 level (Beginner and Upper Beginner). It includes two CDs for the listening section. This is a practice test book and not necessarily a study guide. It doesn't have a lot of explanation (it does have some hints), but it is great for determining your strengths and weaknesses and that will help you prepare for the test. The best thing is it will provide a lot of practice for you.