The Objective-C 2.0 Programming Language
Publisher: Apple Inc. 2009
Number of pages: 133
Objective-C is a small but powerful set of extensions to the standard ANSI C language. Objective-C is designed to give C full object-oriented programming capabilities in a straightforward way. This document is about the first component of the development environment — the programming language. It fully describes the Objective-C language, and provides a foundation for learning about the second component, the Mac OS X Objective-C application frameworks—collectively known as Cocoa.
Download or read it online for free here:
by Ryan Hodson - Smashwords
This book is both a concise quick-reference and a comprehensive introduction for newcomers to the Objective-C programming language. It walks through each language feature step-by-step, explaining complex programming concepts via hands-on examples.
by B. Altenberg, A. Clarke, P. Mougin - CocoaLab
A free book for starting with Cocoa using Objective-C. It teaches you the basics of programming, in particular Objective-C programming, using Xcode. Written for non-programmers, and aimed at leveling the learning curve as much as possible.
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.
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.