Advanced Mac OSX Programming: The Big Nerd Ranch Guide
<p> While there are several books on programming for Mac OS X, <em>Advanced Mac OS X Programming: The Big Nerd Ranch Guide</em> is the only one that contains explanations of how to leverage the powerful underlying technologies. This book gets down to the real nitty-gritty. The third edition is updated for Mac OS X 10.5 and 10.6 and covers new technologies like DTrace, Instruments, Grand Central Dispatch, blocks, and NSOperation. </p>