A friend pointed me to the Stanford iPhone Classes offered on iTunes as part of iTunes U. There are a number of free videos (23 to be exact) taught by Apple Engineers (Evan Doll, Alan Cannistraro and others). I’ve gone through the first two lectures. Admittedly, they require substantial fast forwarding in sections due to length discussion about office hours and the like, the core material is outstanding.
Find it here: http://deimos3.apple.com/WebObjects/Core.woa/Browse/itunes.stanford.edu.2024353965
