This seems useful: This document both introduces the object-oriented model that Objective-C is based upon and fully documents the language. It concentrates on t

This seems useful: This document both introduces the object-oriented model that Objective-C is based upon and fully documents the language. It concentrates on the Objective-C extensions to C, not on the C language itself. http://developer.apple.com/mac/library/documentation/cocoa/Conceptual/ObjectiveC/Introduction/introObjectiveC.html http://developer.apple.com/mac/library/documentation/cocoa/C...