This book covers all the essential core syllabus that you need to cover for AQA A Level History of Art, and essentially it is a textbook for the course. As an A level textbook, it does it's job. It is written for 16-18 year old school kids in Britain who are taking art history and this book should not be considered for any further study or in-depth critique about art.You will not be happy with this book if you are a university student, and if you want a more detailed study of Art History, buy "The Story of Art" by Gombrich, a text which every self-respecting art history student will own.
For a beginners introduction, this is quite good and comprehensive (in a very superficial way), and if you want to add to an interest in art history, even as a novice, this is rather light as a lot of it is rather obvious and self-explanatory.
A level students: Buy it today. Others: stay away.