Coupons can be applied at checkout.
Here are instructions for how to apply a coupon to your purchase:
1. First, click "Buy" and you will be directed to the purchase page
2. Click "Have a Coupon" on the left hand side of the screen under the course name
3. Click "Apply" and ensure your discount has been applied
4. Enter your billing information on the right hand side and click "Complete Purchase"
5. Your course will be found under "My Dashboard" when you sign into your account