If you’re planning to learn Cocoa, there is a good course at www.lynda.com called
iPhone SDK Essential Training
It’s not just for iPhone developers but also for normal developers .
The best value IMO is to pay 25 $ for one month access. There are some lessons you can watch for free. I’m not in any way associated with lynda.com. I just think it’s a good quality course.
Tjena moss! Long time no see!
This might be a good course for me as the only cocoa I’m familiar with comes in a mug at about 10 pm.