If you've received a coupon code from the bookstore or your teacher, it can be entered when you enroll.
Step 1: Your instructor shares the class link for you to enroll in the class.
Step 2: Enroll in the class with an existing account, or create a new account.
Step 3: After you enroll, you will be asked to make a payment. Click, 'Got a coupon code?'
Step 4: Enter the coupon to receive your discount, then complete the class enrollment.