You have a great idea for an app, but where do you begin? Objective-C is the universal language of iPhone, iPad, and Mac apps, and Objective-C for Absolute Beginners, Second Edition starts you on the path to mastering this language and its latest release. Using a hands-on approach, you'll learn how [...]

Does your dog respond to hand gestures or facial signals? Can he perform tricks both inside and outside? You're sure that your dog is much smarter than the one next door, so here's your chance to prove it with Test Your Dog's IQ. Use these quizzes and experiments to gauge your pet's communication sk[...]