Head to https://my.maxon.net/ and click Register
Fill out all the information, check the "I hereby accept the EULA" checkbox, and click the Create Account button.
Go to the inbox of the email address you choose in Step 2. You should have received an email with the subject Validate your email to complete your registration from email@example.com. Open the email and click the Validate Email button. If you do not see this email, please make sure to check your SPAM or Junk folder.
Click the Continue button on the next page, and it will take you to the Profile tab of your newly created MyMaxon account.