Objective-C及Xcode 4入门视频

Objective-C历史简介

http://v.youku.com/v_show/id_XMTUzMDQ3ODI4.html

用 Xcode 4 编写 iPhone Hello World

http://v.youku.com/v_show/id_XMjYwMDQ0NjIw.html\

用 Xcode 4.2 编写 iPhone Hello World

http://v.youku.com/v_show/id_XMzIwMzgxNDg4.html

参考：http://mobile.51cto.com/iphone-261132.htm