Very, very good book. I bought this book on recommendation from my economics teacher, and he was right, this book perfectly summarises all the information required to pass the exam and can be used in conjunction with other textbooks to get really good results.
I can say with all confidence this is a good book, I used it in my June AS exam and got 100%. What more can you want.
Note, this book does not contain everything you need for a really good grade, it is a summary book, and needs to be used with other sources of info, however it is written by the chief examiner for Edexcel economics, so you can garuntee it's all useful stuff.
The book contains sections on how best to revise (including a basic revision timetable), a section on what you need to know (everything clearly written, well explained and full of useful tips), and an example answers section (past candidates answers to show you how to and not-to answer exam questions).
All in all - highly recommended, along with all other books in this collection.