I'm understanding all of this much better now I think. I'm going through your tutorials and taking time to really let things sink in.
All my sites (I have four) are on one server, and at the moment I have only one database assigned to me, although I have been told I could have others if I need them. (I need to learn to walk before running, of course!)
Currently I don't have lots of products for sale, so won't need one for this type of site ...just yet.
If I could get a site registration organized with a back-end management - so I have a list of folk who have signed up, then I think I'd be more than happy to have got to that point to begin with.
Having just purchased SuperSuite, there is a lot choice!
The main thing is not to get too spooked by that. The Webinars I purchased recently by Ray, are excellent to listen to for 'getting' the main concepts and I'm very glad I invested in them.
Thanks again for helping me out here!