[tylerhall]

Aaron Hillegass's "Cocoa Programming for Mac OS X" is how I got started. Likely, his new books only focus on iOS development. But this book pre-dates the iPhone. I learned Mac dev from it in 2005. Highly recommended for the basics.

[jasonlotito]

Thanks. Just for those curious, his latest book is from 2011:

Cocoa Programming for Mac OS X (4th Edition) http://smile.amazon.com/Cocoa-Programming-Mac-OS-4th/dp/0321...

And apparently there is an update coming in October:

More Cocoa Programming for OS X: The Big Nerd Ranch Guide (Big Nerd Ranch Guides) http://smile.amazon.com/More-Cocoa-Programming-OS-Guides/dp/...

[bradshaw1965]

The More Cocoa Programming for OS X: book has been in O'Reilly Rough Cuts beta for several years and the tech is pretty old at this point. Not sure if it ever will see the light of day. The Cocoa Programming for Mac OS X is updated regularly and the training program is ongoing so I imagine it will continue to be updated.