I used this book to pass my classical physics quals at caltech. See my review of Cahn's quantum problem book for details, and why I think this is better than Yung-kuo.

The difference with the classical one is that there were a few concepts I had to study that were not really in the book. Overall though, I still thought that this was a great collection of problems. If I had just done the problems in this book and nothing else, I probably still would have passed.