PhillyCocoa is a Philadelphia area Mac and iPhone programming group, a chapter of the worldwide CocoaHeads. All skill levels are welcome. The only requirement is an interest in Apple-related technologies and moderate tolerance for geeking out.
Mailing List - PhillyCocoa has a mailing list hosted on Google Groups. Traffic is low, mostly member questions and news.
Via the national website: CocoaHeads is a group devoted to discussion of Apple Computer’s Cocoa Framework for programming on MacOS X (including the iPhone). During monthly meetings, members present on their projects and offer tutorials on various programming topics.