Some people dont know but e-Commerce module now have its own site. It was only used to host the module API documentation but now its going to have tutorials, news, and some other things. The address is http://drupalecommerce.org. Currently, we will publish all news here on groups and there. If it works, we might adopt it as the main eC resource of information. Note: if you are a good web designer and want to give to eC a good looking site theme (Garland is nice, but it is Garland), you are welcome!
Also, you can contact the dev team directly almost at any time of the day on IRC. Go to channel #drupal-ecommerce on freenode.org. Its a real-time information. We will help you as much as we can. I, Massa, am almost all days and Gordon is almost all "nights" (once he is in Australia!). There are also many other people that can give some help there.

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contact
btw, might be good to setup a contact point thru the site as well (e-mail or contact module)