Regarding virtuemart, I'm interested in a few things.
One, how to add it to a joomla site and make it work properly, of course.
Two, how to customise/to what extent one can customise. E.g., on an old joomla site that was developed for me by someone else, the virtuemart shopping cart had 'products'. I was selling fine art and antiques,and 'products' didn't work for me. The developer said he couldn't change it to 'art' or 'item', because a) that would make a global change across all his websites and b)as soon as there was an update to virtuemart, the customisation would be gone.
Three, you mentioned, Ed (I think it was Ed, sorry if it was another of you) in an answer to someone else, that they could perhaps use virtuemart to make sites within a site. They were going to have a site with several stores, each with different departments and manufacturers and products. I want to do something similar evenutally, so a step-by-step would be great!