I don't think it's anything like designing a website. I've sat through the Stanford course, which was podcasted, and it isn't easy to get started. I say that as a BSc/MSc (admittedly lapsed) in computer science.
Keeping the iPhone OS look and feel is your main choice, as the GUI is set out in the development framework. Getting outside of that is going to require OpenGL work, which is more akin to games development than website design.
I don't think it's anything like designing a website. I've sat through the Stanford course, which was podcasted, and it isn't easy to get started. I say that as a BSc/MSc (admittedly lapsed) in computer science.
Keeping the iPhone OS look and feel is your main choice, as the GUI is set out in the development framework. Getting outside of that is going to require OpenGL work, which is more akin to games development than website design.