Here is my running list of useful iOS programming resources from around the internet:
- List of good iOS cheat sheets
- iOS Design cheat sheet – Contains resolutions for various iOS devices but it is missing the iPad 3. Here are some quick iPad 3 screen stats: 2048-by-1536px @ 264ppi.
- List of good books and resources from Stackoverflow
- Apress Beginning iOS 5 Development
- Big Nerd Ranch: iOS Programming
- Big Nerd Ranch: Cocoa Programming for Mac – Focused on Mac but still helpful.