We've created a wiki as a reference for developers and end-users. A few useful things are already in place, and we're adding more all the time.
Newcomers to Mothership might appreciate the functionality reference guide, a comprehensive list of 'what Mothership does' - not only does it give a good overview of the platforms capabilities, it goes into a lot of detail too. So developers might find it useful too as a quick look-up.
We're adding developer and user quick starts and guides as quickly as we can too, with links out to related content and references. (There's a list here.
If you're looking for something that's not on there please shout and we'll bump that topic up the list.