Become an Xcoder: Start Programming the Mac Using Objective-C
by B. Altenberg, A. Clarke, P. Mougin
Publisher: CocoaLab 2008
Number of pages: 69
A free book for starting with Cocoa using Objective-C. It teaches you the basics of programming, in particular Objective-C programming, using Xcode. This tutorial is written for non-programmers, and is aimed at leveling the learning curve as much as possible.
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by Neil Smyth - Techotopia
The Objective-C 2.0 Essentials free online book contains 34 chapters of detailed information intended to provide everything necessary to gain proficiency as an Objective-C programmer for both Mac OS X and iPhone development.
by Feifan Zhou - Binpress
I will attempt to teach C and Objective-C as one language. Obj-C is a strict superset of plain C, which means that any valid C is also valid Obj-C. I will supply plenty of screenshots, and include exercises at the end of each lesson.
- Apple Inc.
Objective-C is a small but powerful set of extensions to the standard ANSI C language. This document fully describes the Objective-C language. It concentrates on the Objective-C extensions to C, not on the C language itself.
by James Duncan Davidson - O'Reilly Media, Inc.
This new edition covers the latest updates to the Cocoa frameworks, including examples that use the Address Book and Universal Access APIs. This is the 'must-have' book for people who want to develop applications for Mac OS X.