Product Description Genius is in. You do not need to be a genius to use a 3G iPhone or the new iPhone 3G S. However, if you want to get the very most of it, put this Portable Genius guide to work smart. You'll find cool and useful Genius tips, full-color screenshots, and pages and tool shortcuts that will save you a lot of time and let you enjoy your iPhone to the fullest. Paul McFedries is a Mac expert and full-time technical writer. These books including Mac Portable Genius, Switch to a Mac Portable Genius, and Teach Yourself Visual Mac. Portable GENIUS Fun, hip, and easy, the new Portable Genius series gives forward-thinking Apple users useful information in handy, compact book is easy to navigate and do not skimp on the core.