http://www.hongkiat.com/blog/ios-development-guide-part2-your-first-app/

http://www.raywenderlich.com/tutorials

http://codewithchris.com/

http://www.appcoda.com/ios-programming-course/

http://rypress.com/tutorials/objective-c/properties.html

http://cocoadevcentral.com/

http://www.roseindia.net/iphone/objectivec/objective-c-introduction.shtml

http://masters-of-the-void.com/book-17-objective-c.htm

http://www.tutorialspoint.com/objective_c/

http://easynativeextensions.com/camera-tutorial-part-4-connect-to-the-camera-in-objective-c/

http://www.dreamincode.net/forums/topic/39075-objective-c-tutorial/

http://blog.the-nerd.be/2013/03/enumerate-fonts-on-your-ios-device/

https://github.com/frederik-jacques

http://objc.toodarkpark.net/

http://iostutorialguide.blogspot.com/2013/04/how-to-get-or-detect-end-of-table-view.html

https://github.com/MaciejWalczynski/objective-c-tutorial

https://blog.codecentric.de/en/2011/04/short-introduction-to-ios-for-java-developers-objective-c/

http://web.colby.edu/danelson/cs333-programming-languages/objective-c/objective-c-perlin-noise-tutorial/

http://codeatuts.blogspot.com/2013/04/tutorial-30-codea-v152-objective-c-add.html