> If you were trying to bring up a new programmer, what documentation would you use?
What I do (and I think it's common) is to download and read the source for some official Gnome applications, like gnome-terminal or sound-juicer. If I'm doing something weird, I'll grab the Gimp. If I'm using C#, I'll grab Banshee.
It's not great, but for something as large as Gnome, I can't see a tutorial being all that useful.