Cocoa Programming for Mac OS X

This book is really spot on if you have no Cocoa experience. I find that as I progress with Cocoa I really don't use this book much. The first 10 chapters are really good. I feel like some of the chapters in the middle go on and on and on.

It's very difficult to make examples that are compact yet informative, but for the most part the book achieves that. Worth a read for sure. The AmaZone app example is great, although you'll have to make an extra NSURLConnection call to [...] to get your request signed before sending it to amazon.com.