cPanel is a commonly used interface to manage a web hosting space. Its graphical interface and scripts help automate processes for managing websites.
From cPanel.net: The cPanel & WHM software package is an easy-to-use control panel that gives web hosts, and the website owners they serve, the ability to quickly and easily manage their servers and websites.
CPanel is a UNIX based software that enables not only end-user site owners but also administrators and hosting resellers to maintain and control their space through a web browser. It also interacts with a number of third-party software extensions.
Some popular web hosts that use cPanel:
If you are not technical or simply can't be bothered to worry about your website back-end, I highly recommend that you choose a host that provides cPanel to manage your space. It is fairly intuitive and worth the trouble to find a host that uses cPanel.