This book contains all the necessary information for those who are studying AQA Economics however it is more suitable as revision tool rather than a textbook. It is great to enhance your understanding on certain aspects. However, I don't use this version at all anymore ever since the newer version had recently got published. This student guide is now out of date for the 2015 syllabus so I would recommend getting the latest one although AQA Economics Student Guide 1: The operation of markets and market failure most of the key aspects remain the same so you could still use this book for reference .
Very good for people who just want to recap the basics. It has some very good resources at the back of the book which show exemplar responses, and although some of them are a bit short, the exam-technique commentary that goes with them is very useful since the AS Economics exam is very exam-technique based.