Kaplan is interested in one thing and one thing only, making as much money as possible using as little effort as possible. This book, I kid you not, is identical page by page to the 2011-2012 edition. Do not waste your money. Buy the 2011-12 edition for cheap and forget this 2013 gimmick. It doesn't even offer as much online material as the 2012 edition! The only thing that I could find potentially beneficial about this version is that it claims to grant you "computer adapted tests" (like the ones on the real thing) online....but given its similarity to the 2011-2012 edition thus far I would not be surprised if the online tests are identical too. But, admittedly, I have yet to take them. Overall I have been quite displeased with Kaplan products. This book is a flagrant example of this company milks a product for all its got. Don't be fooled.