Your site gets modules, skins and updates from the Marketplace, which is run from jamroom.net. To use it, your site needs the Marketplace System ID of a jamroom.net account.
A jamroom.net account also gives you:
Sign up at jamroom.net/user/signup and activate the account with the link in the email you receive.
If you entered your email address in the installer's Email Address field, the installer already connected your site to the Marketplace: the field is labeled Creates Marketplace Account. Check the Marketplace line in the System Check. If it's green, skip to Using the Marketplace below.
Log in to jamroom.net and open the Licenses section of your account (in your user menu). It shows your Marketplace Email and Marketplace System ID.
Licenses you have on jamroom.net, Jamroom Premium included, belong to this System ID. That is how the Marketplace knows what your site can install.
Open the Update Marketplace form in either of these ways:
Enter your Marketplace Email and Marketplace System ID, leave the other fields as they are, and save. The System Check's Marketplace line then turns green.
Open the Marketplace at ACP > Modules > Core > Marketplace. The tabs list:
Each item shows whether it's free or premium. Installing one takes a click, and you don't upload any files.
The System Updates tab lists updates for everything you have installed. Check it regularly to keep your site up to date.
Next: Key Concepts