There are several ways to read your email. We reccomend you use an email program like Outlook, Windows Live Mail, Eudora and the like to actually connect to your account and download the email to your local computer. However, if you need to be able to access your email on the go you can use one of the webmail interfaces that cPanel offers. To accomplish that just go to your domain.com/webmail and login. (Use YOUR account domain name.) When prompted for the username make sure to enter the full email address as the username and then enter the password.
If you are the administrator and would like to access different email accounts through the cpanel, please do the following:
Enter cPanel, then click on the Mail icon
-SquirrelMaill
-Horde
-RoundCube
You have now accessed your email through cPanel.