CentOS System Administrator Prep by Shawn Powers Installing, administering, and maintaining Ubuntu Server
http://www.cbtnuggets.com/it-training-videos/course/linx_centos

This CentOS course is designed to prepare a new Linux system administrator for certification and general skills.

Recommended Skills: A conceptual understanding of what Linux is, ideally with minimal hands-on exposure to a Linux installation of some sort.

Recommended equipment: Virtualization software capable of snapshots (VMWare, VirtualBox, etc)

Related certifications: LPIC-1

CentOS is the freely downloadable version of Linux created from the source code of a popular commercial distribution. This course not only prepares a person for entry level system administration itself, but is designed to cover the topics required for certification on the commercial distribution.