Teach yourself Objective C.
iMaster Objective C, part of the iMaster self-teaching system, is the easiest way to learn how to program with the powerful and popular programming language Objective C. Objective C is the language used to develop for both iOS devices and OS X. Broken into 6 different topics and 1 main test, iMaster helps learn all aspects of Objective C programming. A topic is "mastered" once it has been passed 3 times. You are considered a master of Objective C once you have completed all quizzes. Great for learning a new technology for your job skills or to learn this new programming language.