ast3r3x,
Thats the
First Edition
That may be why.....if you have MacOSX 10.3...
I would get the
2nd Edition. Its alot cleaner and covers Bindings (which appeared in 10.3) and several other new topics.
I would also take a look at
Cocoa Recipes for Mac OS X. Its only based on the Vermont Recipes app from the
StepWise site a while back. But you start with a basic app and add more and more (preferences, undo, drag & drop, etc.) along the way, so its a good read (atleast I thought so).