Hello, I want to learn to program in Cocoa and Obj-C (I know C and C++ a little and slightly, very slightly C#) and I absolutely love O'Reilly's books - and I found O'Reilly has one book about Cocoa and Obj-C, called "Learning Cocoa With Objective-C" - however, this book is from 2002. So, I want to ask - do anyone from you know how outdated this book is? and if it is OK to buy it? I browsed few pages on google books, however, it is not complete on Google Books... so, do anyone of you know this book? Thanks.