I picked up this book to help my decision between getting a Palm or a Pocket PC and was blown away by the capability of this new class of shirt-pocket computing power. I've checked out all the features of the Casio pocket PC following this book, and it's totally comprehensive. This is the book that should have come with the computer. It covers every aspect of the built-in Microsoft Office suite, as well as the MP3 player functions, e-books, handwriting recognition (awesome!), GPS compatibility, remote web browsing, and on and on. This book sold me on Pocket PC's over a PDA, and for that I consider it worth the price. But it's also an easy to read reference manual for using all the capability that these little gems have to offer.