If you have not yet confirmed your account using the email verification, you must complete this process first.
Once you have confirmed your account, you may change your password using the Change Password action available on your Profile page.
If you do not remember your password, you can use the Reset Password action on the Login page. This will send a confirmation email to your registered email address, with a link to click that will allow you to enter a new password. This link will expire approximately one hour after it’s sent; if the link is expired, you can simply repeat this process until you’re able to login.