New with iOS 5.0
Tour Xcode 4: Writing and debugging Objective-C and adding project assets
Learn the UIViewController lifecycle to optimize memory usage
Use Core Animation to specialize widgets with custom drawing
Professional polish and transitions with Core Animation
Respond to raw touch input and gestures
Intercept the accelerometer's raw data, gestures, and device orientation changes
Use Web Services to request data from their and third-party servers
Integrate native apps: e-mail, photos, and Safari
