You can find excellent documentation for cPanel/WHM on the developers' site here:
Here are direct links to the individual WHM and cPanel sections:
cPanel User Documentation
Getting Started with cPanel/WHM
If you're unfamiliar with cPanel/WHM administration, here are a few good places to get started:
You can also find useful information and support for cPanel/WHM in their forums:
Please keep in mind that with unmanaged servers, we support the server hardware, initial operating system installation, and network uptime, whereas the customer supports all on-server installations and configuration. If you have questions or issues specific to cPanel/WHM functionality, you'll want to start by searching for relevant documentation and/or support forum posts at the above links.
If you are uncomfortable administrating your cPanel server yourself, we do provide managed servers, where we would perform monitoring, server maintenance, and other administrative tasks. More information on that service is available here: