When you are enrolled in a class, the teacher will grant you access to the student portal. This requires that you log in to this web site.
Log in
Here is the main login page: Log in.
While logged in, a special bar will be displayed at the top of the screen:
Right-click the right portion if you ever feel the need to edit your profile.
Student portal
When you are logged in, extra content will become visible to you, such as videos of the teacher demonstrating exercises. This is to help you with your home practice.
Here it is: Student portal