If you have never used cPanel before, you might feel a little bit intimidated, but cPanel actually is the easiest control panel software to use, and this is why it is the most popular panel today in webhosting.
The following three sites cover cPanel in great detail:
cPanelGuide.net is a visual guide. This is a good site to view if you want to see what cPanel’s various screens look like and what options are offered. Note that not all hosts configure cPanel the same way, so not all options may be available or look exactly the same as this.
WebMasterStop.com has an unofficial guide that goes into detail about the various functions in cPanel. This guide offers more description of what each function does and is more helpful once you are comfortable with cPanel. You can also download the guide in zipped PDF format here: The Unofficial cPanel Guide.zip.
cPanel Documentation, the official documentation is also available online. For technical issues you should also register and join the cPanel Forums, which are helpful for when you have a specific problem.