Is this book for Macintosh, Windows, or both?

This book is not only for Mac and Windows users, it's for people who don't even have a computer. In fact, it's ideal for anyone with $29.99 (kidding). Because Photoshop is identical on both the Macintosh and Windows operating systems, the book is for both Mac and Windows users. However, the keyboards on a Mac and PC are slightly different, so every time we give a keyboard shortcut, we give both the Mac and Windows shortcuts. (Well, there is one other difference in Mac OS X you'll find Photoshop's Preferences under the Photoshop menu instead of the Edit menu like it used to be in the Mac OS and still is in Windows.)