Most of our Mac and iPhone software is written in Objective-C, which is somewhere in between Java and C++ on the easy-to-code scale.

Here are our favorite resource sites for Mac programming:

CocoaDev
This is the premier site for code snippets. We dare you to search for a function name and come up empty!
cocoadev.com

Cocoa Dev Central
We started here, and you can too.
cocoadevcentral.com

Cocoa Is My Girlfriend
CIMFG has the best mix of tutorials written in a not-too-basic, not-too-nerdy style.
cimgf.com

iPhone SDK Development
For the iPhone, there’s quite a bit less, mostly because we are all still bound by that pesky SDK. Still, there are nuggets to be gleaned from iphonedevsdk.com.
iphonedevsdk.com

Unofficial iTunes App Store Rejection Criteria
Since rejection is something we’re all getting used to when dealing with Apple’s iTunes App Store, we’re compiling a list of criteria that leads straight to a speeding ticket when trying to get your apps approved.  Hopefully it will save some of you days or weeks of work!
10base-t.com/unofficial-appstore-rejection-criteria