Developing on an iPhone is pretty straight forward. As a first time developer on any Mac platform, I spent about a week learning Objective-C and the frameworks

Developing on an iPhone is pretty straight forward. As a first time developer on any Mac platform, I spent about a week learning Objective-C and the frameworks in general using the very nice tutorials Apple has available. It's interesting working with such a dynamic language for application programming. I am on the developer program and one thing you should be careful about if you develop using the simulator is to use only the published APIs within the iPhone developer website. The simulator will sometimes let you use API's that are available on the Mac but not (yet?) on the phone. I've run into a couple of cases where this can be an issue.