To do this:
Go to https://app.mastermind.com/users/sign_up. Fill out the required information, click the checkbox and hit the Submit & Next Step button
Type in your First & Last Name and set your Time Zone and hit Next
Choose the between the available options for your subscription plan and click on the "Start your free trial!" button
Next, put in your credit card information which will be needed to keep your subscription active if you wish to continue using the mastermind.com software. Once done, click the "Start Free Trial" button.
Lastly, set the name of your Organization and the Support Email which will be the email address that people can reach out to if they have questions about your or about the course you've created. Then, hit Finish