1. The document discusses getting started with iPhone development, including downloading the SDK and registering as a developer for free or paying $99-$299 for additional access.
2. It recommends writing code in Xcode and creating the user interface with Interface Builder, then testing apps in the iPhone simulator or on an actual device.
3. There are 6 main types of iPhone projects including navigation-based, tab bar, OpenGL ES, utility, view-based, and window-based templates for common app structures.