Ordered this book for a class. The book is almost triple of the price at the publisher's website (for the hardcover version). Got my book from one of the vendors here in Amazon. They happen to be from the UK and the version that they have is the "International version". In this case this is exactly the same version as the "North American" version so do not get confused by this and also is from the same publisher.The book itself is just an overview of computer organization and architecture so you won't be finding a more in-depth approach to this field that you would from other sources. Having said that, I think it is a great book for this level although some sections are more difficult to follow than others. Sometimes I feel that some of the topics assume that you have some background knowledge that is not necessarily implied so for some topics you may have to consult other sources in order to clarify or expand what is being discussed on the book. Regardless, I still consider that the book does a great job compiling and presenting the different aspects and concepts of this vast and complex field.