How can I change my password?

To change your password please go to your Profile (top right of the browser window) and choose the "Settings" tab. Under "General" you'll find "Password" and you simply need to click "Edit" there to change it.

First enter your current password and your new password (twice) before clicking on "Save". You now have a new password!

If you forget your password and would like to reset it please read this answer.