Apparently, Apple is in a very giving mood for the holiday season. Apple's very own electronic bookstore has made available six development books for free.
In order to download these free books, launch iBooks on your device (iPhone, iPod touch, or iPad), go to the Store, tap search, and search for "apple developer publications."
These are the titles available for download at the iBookstore:
- iOS Technology Overview
- Object-Oriented Programming with Objective-C
- iOS Human Interface Guidelines
- iOS Application Programming Guide
- The Objective-C Programming Language
- Cocoa Fundamentals Guide.