Cocoa Programming for Mac OS X (3rd Edition) 3rd Edition

This was the book I had been waiting for, or at least ONE OF the books I had been waiting for, to really get started with Cocoa programming. The O'Reilly book, as has been mentioned plenty of times here, leaves a lot to be desired, and while it was better than nothing, a wall still remained between me and Cocoa after finishing it.
After reading Cocoa Programming for OS X, I feel I can say I "get" Cocoa finally. That's not to say I'm an expert, but that I can complete a simple program now, on my own, using the Cocoa frameworks and concepts. As Aaron says in the book, learing the Cocoa APIs will take much longer. I come from a Java background, with only marginal C and C++ experience. Although Aaron does not speak much about the objective-c language itself, that's ok. Apple's PDF is more than adequate to get that background.
There are some things that get glossed over that I wish had been more fully explained, and some things left out altogether that I would have liked to see, such as:
-- Spawning and managing multiple threads, thread safety issues

-- exception handling, debugging and assertions

-- Cocoa "primitive" objects (NSPoint, NSRect, NSRange, etc.), why they apparently don't need to be retained or released, and why they are "NS" objects but don't really behave like them.
-- Calling Toolbox routines or those from APIs that have not yet been "Cocoa-ized" (and integrating the Old Way into the Cocoa Way), with examples. Cocoa is nice but once you get away from building a text editor, you will need to dig into this ugly and unfriendly world at some point (unfortunately). For instance, how do I access the Airport card, how do I open and use a network socket, how can I read a DV-encoded stream from a FireWirePort and save it to disk as a QuickTime movie, how do I access a database, how do I use an OpenGL view?
-- How to customize Cocoa UI elements. Like if I wanted an NSSlider with TWO sliders, a minimum and a maximum. There is an example of subclassing an NSView in the book, but that's just a drawing panel.
To be fair, I'm not really criticizing Aaron for these things. The book has plenty of useful stuff, and I'm sure Aaron wants to write and sell more books, so some advanced Cocoa books that address some of these things as well as others will be welcome...I hope someone is writing them right now. I also hope someone is writing a comprehensive Cocoa API reference, as Apple's is somewhat lacking (Have you seen the phrase "Description Forthcoming" more times than you care to remember? I thought so.)
The bottom line is that this is a great book that is a must-have for anyone interested in Cocoa programming. I'd probably rate it four or four-and-a-half stars, but I'm giving it five for being there when I needed it, and being the first really useful book on the subject. The best thing I can say about it is that I can now do things there is simply no way I could have before.

First my background. I'm a very experienced C++ programmer who is also very experienced with Carbon.
I found this book to be a great intro to Cocoa without a lot of preaching about how Cocoa will change the world. Carbon vs. Cocoa seems to be an almost religous debate, and I'm glad this book didn't try to overpromise the benefits of Cocoa.
The book is well organized, very readable, and has good examples. It is *much* better than the O'Reilly "Learning Cocoa" book.
After reading this book, you'll be able to start writing applications in Cocoa, and you'll know where to go for more info.
Now, my nits:
* The book explicitly stated that it was for people with a C++ or java background, but I think there should have been more direct comparisions between C++/java and Objective C. For example, saying that class functions (the ones with +) are just like static functions in C++ would have helped.
* This may be an introductory book for people moving from other platforms to the Mac, but the UI for most of the applications violated Apple's UI guidelines in many ways. I think the book should have promoted following Apple's UI guidelines.
* There was no discussion of exceptions, and much of the code was not exception-safe and didn't do much error checking. There wasn't even the usual disclaimer about leaving that out for simplicity.
* I would have liked a quick overview at the end of some of the classes not discussed in the book with a couple of sentences about what they do. This would help to learn what's out there.
I hope to see more books on Cocoa by the author. There's still lots of room for books on more advanced Cocoa topics.

First, I have to say I loved this book, I actually read half of it on a trip, not being in front of my computer, and still enjoyed the clear style and the gradual addition of new concepts and tools, chapter after chapter. Then I could hardly wait to be back home and start doing it for real.
Now for the potential buyer.
WHAT IT IS NOT: a reference book (no list of classes etc...) or a technical book for advanced programming; a book about Java or Carbon; an introduction to object-oriented programming; an introduction to C.
WHAT IT IS: an excellent introduction to programming in Objective C in the Cocoa environment of Max OS X, provided you know enough about
object-oriented programming (some basic understanding of C++ is preferable too).
WHAT YOU LEARN: Objective-C in Cocoa; using Apple Developer Tools; building an application in Mac OS X; how to make optimal use of Cocoa classes and API, knowing how they were conceived and meant to be used; a number of basic concepts and tips that really get you started.
THE PLUS that make this book so interesting: very good and clear writing; some amusing brief 'historical' insights; you really feel the author knows what he is talking about; the author gives personal views (clearly stated as advices, not rules); follow-up, errata, examples, comments, and more on his web site; still completely useable with OS X.2 (a couple or very minor changes that are listed on the web site anyway), so that's the good time to buy it (price is down, but content is still up to date).
Final comment: Objective C in Max OS X is very powerful and enjoyable.