How to change my password:
Once you have logged in you can click on the button that says 'Settings'.

This is located at the top of the screen along with the following buttons:
'Active Topics', 'Memberlist', 'Search', 'Help' and 'Logout'.

Left click once on 'Edit Profile' this will bring you to a new screen that will allow you to enter the password you currently have then enter the password you would like to have.