When you placed your order, you should have gotten two emails: an order confirmation and your account credentials for you to login.
Inside your order confirmation email there is a PDF that gives you instructions on how to navigate to the classroom where you can get the prep guide, supply list, fabric requirements, and more! There's also a link to the classroom.
Please let me know if you received either or both emails, as that can indicate other issues if you did not receive them.
In general, to get to your class, click on "My Account" and make sure you are logged in. Once you are logged in, scroll down a little bit on the Dashboard. You will see a list of classes you are registered for. Click the name of the class and you will enter the classroom. Easy!