You can change your password with the Forgot Password? link on the sign-in page. 

If you're already signed in, sign out to access the page.

Type your first name, last name, and username. You need an active email address associated with your account to receive instructions. Or, type your first name, last name, and email address.

After you submit your information, you can create a new password based on instructions you receive in an email. Your current password remains active until you change it.