The book dose a good job of explaining a hard subject, using worked examples followed up by questions. While it reads very much like an earlier book by A.Holderness, it is much more sutable to the modern A and AS course. It is an excellent book, however some students may find it hard to understand, especially if they are not accustomed to reading such books. I found it very helpful throughout my A-Level course, and would recommend this book to anyone who either finds the calculations in chemistry hard, or anyone wishing to furthar their skill in the subject. This book caters for both types of student.