A CALayers tutorial that shows you how you can add drop shadows, rounded corners, and other neat effects to views in your iOS app.
A UIView tutorial for iOS that shows you how to move and otherwise transform views in your apps.
A Cocos2D tutorial on how to drag and drop sprites via touch gestures.
An article announcing the iPhone 101 for Baltimore Developers hands-on iPhone workshop.
Texture Packer Tutorial for iOS: How to Create and Optimize Sprite Sheets in Cocos2D with Pixel Formats
A Texture Packer tutorial that teaches you how to create and optimize sprite sheets.
An announcement about the Cocos2D book written by Rod Strougo and Ray Wenderlich, and a note about the 360iDev iPhone conference.
An announcement about an upcoming iOS Programming 101 class at the 360iDev iPhone conference.
A Core Graphics tutorial for iOS that teaches you about patterns.
A Core Graphics tutorial for iOS that teaches you how to create glossy buttons.
A Core Graphics tutorial for iOS that teaches you about arcs and paths.
A Core Graphics Tutorial for iOS that teaches you about shadows and gloss.
A Core Graphics Tutorial for iOS that teaches you how to work with lines, rectangles, and gradients.
An email tutorial showing you how you can import and export your app’s data via email in your iOS app.
An iTunes tutorial on how to let users easily copy files to and from your app using the iTunes File Sharing feature.