A newly published website - http://www.appsamuck.com/ - aims to help aspiring iPhone coders write their applications by providing the source code to real working application in the hopes that users will learn by real-world examples.
This will be a wonderful resource. Apps Amuck offers a directory containing free tutorials for professionals and hobbyists iPhone developers. Their goal is to help you solve your development problems, and learn the newest technologies using the many existing free tutorials available. The site will also contain discussion forums, a free job search, white papers, and other technical reference materials.