Apple…
GitHub…
iPhone and Objective-C Tutorials…
raywenderlich.com – Tutorials for iPhone / iOS
thenewboston.com – Objective-C and basic iPhone tutorials
iphonesdkarticles.com – SQLite tutorials, etc
switchonthecode.com – More tutorials
How to Make a Simple RSS Reader iPhone App
Creating Custom Overlays for the MapKit Framework
Class Source Code…
ASIHTTPRequest – Open source CFNetwork wrapper for Mac OS X and iPhone
College iPhone Development Courses…
Rose-Hulman Institute of Technology – iPhone development class w/ videos
Stanford University – Developing Apps for iOS
Stanford University – iPhone Application Development
UC Davis – Introduction to iPhone Development
Graphic Resources…