With the elimination of Apple’s iPhone developer NDA (one of their smartest moves PR wise in a long time), the gates are open for documentation regarding the innards of the SDK. The first development instruction book to debut is Erica Sadun’s “iPhone Developer’s Cookbook: Building Applications with the iPhone SDK.”

It brings together already-tested code snippets, details about displaying media content, accessing the address book and other parts of the phone for apps, organizing UI elements, and more. It should be a very helpful guide for would-be iPhone programmers.

It’s available as a downloadable PDF for $28.79 here: http://www.informit.com/store/product.aspx?isbn=0321553519