In-depth cPanel documentation is available on the cPanel website at http://docs.cpanel.net/twiki/bin/view/AllDocumentation/
A library of cPanel videos that cover multiple topics is available at http://www.cpanel.net/products/cpanelwhm/cpanel11/tutorials.html
The Linux VPS with cPanel Getting Started Guide provides basic information of the Linux with cPanel server. It provides a general overview of the cPanel interface, the WHM (Web Hosting Manager) interface, access levels for users, support policy and general "getting started" steps to help you begin using your server.