Before adding all the “real” users to your list, you should add a test member and practice sending items and reading them. If you have access to an e-mail account outside the TCC, that would be a good account to use.
Here's the procedure for adding a member to the list.
From the list manager homepage, click on thetab.
Click on. You will see a list of current members, including the list manager.
Click on thebutton near the right-hand side of the page.