苹果公司的ios系统编程指南，这是一本翻译过来的编程手册，适合初学者大概掌握ios编程框架。-Apple ios System Programming Guide, which is a translation of the programming manual for beginners to master ios about programming framework.

cocoa编程入门手册，这本书手把手教你怎样使用xcode开发基于cocoa的程序，菜鸟必备-cocoa programming for mac for dummies