To change your password you will need to go to your Profile page.
- Go to your own profile page
- Click 'Edit' - 'Update Your Profile' above your avatar (photo)
- Click the 'Personal Details' tab
- Enter your new password twice; once in 'Password:' and again in 'Verify Password:'
- Enter your existing password
- Click the blue 'Update' button near the bottom of the page
- That is it - job done!