Sorry for the delay responding - spent the weekend fighting a battle against food poisoning.
I'll dig out some links for you. There should be somewhere in the wiki for "Getting involved". Certainly I picked up all I know from somewhere, I assumed the wiki. If it's not there, or not in a single coordinated place, then I'll stick something together.
Hmm, I've had a quick look with no result. Yup, a "Getting Involved" page is a good idea, I'll bash something together tonight.