To change your password, from the main menu navigate to "User Account" from the left-hand side menu, then select "Change Password":
For users who have previously logged in with a password:
If you created your account with a password or added one in the past, the next page will prompt you to "change" your password. You'll need to enter your current password as well as the new one you'd like to change to.
Please make sure to hit "Update password" once done.
For users who do not have a password
If you created your account with a Google or Facebook login, you won't have a password set. This page will prompt you to "set" your password. Adding a password will let you sign in with either your external login (Google or Facebook) or with an email address and password. Enter and confirm your new password in the text boxes and click the "Set password" button to add the password to your account.