Thork, what debugger do you use?
Beorn, I'd never even used Obj-C a week ago. I am literally at the stage where if my code runs, I put down my cup of tea and perform a mini-mexican wave. If there is a bug, I look at the little red triangle and frown at it.

I write NSLog commands into my code and use the built in debugger at the bottom of the console.
In answer to your other question
What editor are you using?
I just use the xcode without the damn storyboard because storyboard is giving my balls an ache.
I'm compiling with LLVM. I use ARC and everything I have made so far is functional, but as ugly as Vongeo.