Your username is your first initial and last name; your initial password is the letters "lcn" followed by the last six digits of your Social Security number. You can change your password using a link on the login screen.
Want mobile access to your E-mail? Login to your account via the web, go to "Settings" in the upper-right corner, and then "Forwarding and POP/IMAP" and enable IMAP. There will be instructions there for configuring your mobile device or E-mail client.