In order to attend a class, you first need to register for it. After you have registered, you can log in to your client dashboard at varsitytutors.com to see a list of all of the classes and camps you're registered to attend. 30 minutes prior to each session, a link to join that session will be shown near the top of the page.
In addition, a reminder email that includes the join link is sent 2 hours before the start of each free class session or 24 hours before any small group (purchased) class session.