CPanel is a fully featured web-based control panel that allows you to manage your domain through a web interface. The idea is to transfer as much of the control and responsibility of managing your web site to you. You have the ability to manage all aspects of e-mail, files, backup, FTP, CGI scripts, and web site statistics.
How To Access Your Control Panel:
There are many ways you can access your cPanel. Any of the below links will work
http://your-domain/cpanel
http://your-domain:2082