When signing up for online courses, some student choose to use their own email addresses to make the purchase, and others choose to use a parent's email address. Either one is fine, and will change nothing about the way you use your Inspirica.com account or the way you access classes--you'll just have to use that email address when you want to log in and access class.
The email address you used to sign up will also be the email address that we send instructions to. These instructions are also available in greater detail on the website, so you do not need to change your email address to receive instructions, but if you wish to change your email address for this or any other reason, you can.
To do so, go to https://inspirica.com/my-account/ and click the "My Username and Password" menu option from the menu on the left (pictured below).
You can change your account details, including your email address, using the "Email Address" field on the "Update My Account Info" page. When you've entered your new account info, click the blue "Save Changes" button.