iOS Game Tutorials
⌘-R in Chief
Yeup! He's very popular to be linked to from the cocos2d forums. Assuming a person isn't completely brain dead, the tutorials seem enough to get them on their feet and running.
All of his tutorials are very excellent. Totally recommend reading his site - he writes very well, as do any of his guest writers. He does a great job introducing you to concepts without having much background on it.
KB Productions, Car Care for iPhone/iPod Touch
All too often, art is simply the loss of practicality.
Yes, his stuff is well written and extremely good and helping you understand. This site has some wicked tutorials too: http://ios-blog.co.uk/iphone-development-tutorials/