"iPhone: The Missing Manual, 6th Edition" (O'Reilly Media, $24.99) is a funny, gorgeously illustrated guide to the tips, shortcuts, and workarounds that will turn you, too, into an iPhone addict.

With the iOS 4 software and the new iPhone 4, Apple has a world-class hit on its hands. David Pogue is back with this expanded edition of his witty, full-color guide: the world's most popular iPhone book.

New York Times tech columnist, bestselling author, and iPad expert J.D. Biersdorfer shows you how to get the most out of this sleek tablet to surf the Web, send and receive email, watch movies, and more, with "iPad: The Missing Manual" ($24.99 USD).

Facebook's popularity is skyrocketing, drawing more than 400 million people to this combination online village green, personal website creator, and souped-up address book. Enter "Facebook: The Missing Manual, Second Edition."