http://blog.csdn.net/developer_jiangqq/article/details/12130799
http://www.cocoachina.com/special/fornew.html
Objective-C 基础语法(连载系列一):http://xys289187120.blog.51cto.com/3361352/657583
iOS Developer Library:https://developer.apple.com/library/ios/navigation/
iOS开发系列:http://www.cnblogs.com/mjios/category/473924.html