Don't know anything about programming? No problem! Acclaimed author Dave Mark starts out with the basics and takes you through a complete course in programming C using Apple's free Xcode tools for Mac and iPhone, using contemporary OS X and iOS, respectively.
Learn Cocoa for the Mac, Second Edition, completely revised for OS X Mountain Lion and XCode 4, guides you through the jungle of classes, tools, and new concepts so that you can get started on the next great OS X app today.
Learn cocos2d 2: Game Development with iOS provides a rock-solidand expandedintroduction to the new cocos2d 2.0 iOS game apps creation engine and related tools, including the new Kobold2D project and more.
Learn Design for iOS Development is for you if you're an iOS developer and you want to design your own apps to look great and be in tune with the latest Apple guidelines. You'll learn how to design your apps to work with the exciting new iOS 7 look and feel, which your users expect within their latest apps.