http://cocoadevcentral.com/d/learn_objectivec/
I've been picking up what I can about Objective-C, but so far I've had trouble actually getting a good handle on it. The books and tutorials I've been using aren't about Objective-C, they are about the iPhone SDK. I've done C, C++, and Java so catching the differences in syntax isn't hard, but it's been hard to track down some of the new semantics. This tutorial covers it all pretty well, and now I finally get what @property and @synthesize are and how they work together.
Edit: Here are the formal Objective-C reference docs from Apple.
I've been picking up what I can about Objective-C, but so far I've had trouble actually getting a good handle on it. The books and tutorials I've been using aren't about Objective-C, they are about the iPhone SDK. I've done C, C++, and Java so catching the differences in syntax isn't hard, but it's been hard to track down some of the new semantics. This tutorial covers it all pretty well, and now I finally get what @property and @synthesize are and how they work together.
Edit: Here are the formal Objective-C reference docs from Apple.