If you are logged in to your account, go to the My Account section and look for Account Settings. Update your password there. Otherwise you can click the Forgot Password link from the Login page and submit your email address. A link to reset your password will be emailed to you.
Your new password needs to be at least 7 characters long, including at least 1 number.
Any issues, contact our customer service team and they can reset your password for you.