If you only get one GRE prep book, this is the one to get. Other books will tell you how to solve the kinds of problems you are likely to find on the test itself, but this book shows you how to figure out the correct answers to questions you'll face. As the authors make special note of, "The GRE assesses how well you take the GRE." Hey, it's great if you can solve every math question the Educational Testing Service throws at you, but doing so can take more time than you have to spare. It's much more efficient to tackle those hard problems by eliminating all but one of the answers to figure out the correct choice. This strategy goes beyond your basic process of elimination, but the Princeton Review gives you all of the strategies you'll want to have at your disposal, gives you numerous "Here's how to crack it" examples, and even helps pump you up to do your best when test day comes.
The Princeton Review strategy was particularly helpful to me. I aced the GRE back in 1991, but that was a long time ago. I had forgotten more than I'd like to admit about the Math section, the Verbal section had changed quite a bit (no more antonyms - boo), and the challenging yet super fun Analytical section had been eliminated and replaced with an Analytical Writing section. Heck, even the test experience itself had changed drastically. Not giving myself as much time as I should have, I had to do some cramming. I started with a Barron's book, and it was quite helpful - but not nearly as helpful as this one. These guys have done their best to get inside the minds of the test creators. Other books teach you how to solve problems, but this book shows you how to take the test. Did I still encounter a few problems on the real test that weren't in this book? Of course. Were my scores as high as they were over twenty years ago? No, to be honest, but I was still happy with them, especially considering I had been out of school for eighteen years.
Obviously, Cracking the GRE, 2013 Edition covers the new revised version of the GRE, so you're good to go until ETS shakes things up yet again. You're still going to need to work to prepare for test day, though. If all of these strategies were obvious, there would be no reason for any GRE prep book. The book is probably most helpful in terms of the Math section, but there's no shortage of tips and tricks for any of the test sections. I know I would have been less prepared than I was for the actual test if I had not worked my way through this book.