Excellent comprehensive manual for iPhone. The very detailed step-by-step breakdowns with full-color screen caps definitely make this a book I recommend for those looking for an iPhone manual (especially for the "senior" crowd). If you already know how iOS works (had a Touch, etc previously) the detail might be a bit much but I found tons of useful information.
I learned a lot about my little gadget. Configuring notifications, adjusting volume without unlocking, making your own ringtones (who would paid $1.29 after reading the simple fix) and many other handy insights. I would recommend it.
Excellent and comprehensive step by step manual. I just purchased the new Sixth Edition which covers the latest iPhones and iOS 6. I recommend it even if you know what your phone well you'll find this helpful. You can find them cheap at SAMs Club.