1) Log into your webmail: http://yourdomain/webmail (replace yourdomain with your actual domain name) using the full email address as the username and the password you gave it when creating. Click the Log in button.
2) Selet your prefered webmail client from the three choices. We find roundcube to work best for us, but you can select any you wish.
3) You are now logged into webmail, you will see your inbox emails in the main window, and can create an email by clicking the compose button/link in the top left