Best way to learn the Objective C programming language?

I have an iMac and I am learning about Xcode. However, you can't do squat unless you know Objective C. Where can I find a fast way to learn Objective C?

Best way to learn the Objective C programming language?
For learning the language:


http://developer.apple.com/documentation...





For cocoa %26amp; XCode:


http://www.cocoalab.com/cocoalab/index.p...


there's a good book/pdf here





for a quick tutorial:


http://www.otierney.net/objective-c.html

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