If you want to change the email address you use for course access, here are the steps to follow:
How to Change Your Email Address for Course Login
Steps shown in this video:
1. Go the the course page. The course dashboard can be found at the site https://courses.handlettereddesign.com
2. Log in with the password provided to you after your purchase
3. On the Dashboard page, in the top right corner, click the drop down menu and select "My Account"
4. On the Account page you can change your email address and remember to press "Save Changes"
5. You can also change your email address on the account page. :)