Book excerpt: The Genius is in. You don't have to be a genius to switch from a PC to a Mac. But if you want to make the move with less hassle, put this savvy Portable Genius guide to work. Want to share data between your Mac and your PC? Understand the differences between Mac OS®X and Windows®? Learn how to perform everyday Mac tasks? Transfer important stuff like calendars, contact lists, and music? You'll find cool and useful Genius tips, full-color screenshots, and pages of easy-to-access shortcuts and tools that will save you loads of time and let you enjoy your Mac to the max. Paul McFedries is the president of Logophilia Limited, a technical writing company. He has written more than four dozen books that have sold more than two million copies worldwide. These books include Macs Portable Genius, Teach Yourself VISUALLY Macs, and Teach Yourself VISUALLY Windows Vista. Paul encourages all readers to drop by his Web site, www.mcfedries.com. Portable GENIUS Fun, hip, and straightforward, the new Portable Genius series gives forward-thinking Apple users useful information in handy, compact books that are easy to navigate and don't skimp on the essentials. Collect the whole series and make the most of your Apple digital lifestyle.