Provide a username and a password.
Use alphanumeric characters, '-' and '_' for username.
Submit a valid e-mail address as you will be sent an e-mail to activate your account. Your e-mail will be treated confidentially, we need it to perform an initial verification and to provide your account informations in case you lose them.
If confirmation e-mail is not received, check if it has been classified as spam. You can request it to be sent again.