Programming with Objective-C - Apple Style

The latest docs from Apple on the basics of Objective-C are marvelous. I’ve sat with many beginners who are stumped on how to organize their code. There are so many features they miss. The whole set of docs is great, but their opening page impressed me the most. It walks through the key pieces you use to build Objective-C applications. Objects, Protocols, Blocks, Delegates, Error objects; it’s all right here in one page with short paragraphs and links to learn more.