You can reset your password in two ways – one way if you aren’t logged in, and another way if you are.
If you aren’t logged in, click on ‘I don’t know my password’ on the Sign In screen. Enter your email address, then confirm that you want to change your password by entering the code from the email you received, or by clicking the link from the email. Once done, you will be prompted to enter a new password.
If you are logged in, you can change your password by clicking on the Settings icon at the top of the left hand pane, selecting Account, then Change Password. If you have not previously set a password for your account, for example you’ve logged in with Google, Facebook, Twitter or Microsoft, you will be prompted to set a password here instead.