Operating System Specific

* Starting and Stopping Services [Red Hat][Debian]
* Configuring Network Interfaces [Red Hat][Debian]
* Installing and Removing Software [Red Hat][Debian]

Dual Booting

* Planning Ahead -- Partitioning Requirements
* Reinstalling GRUB or LILO to the Master Boot Record
* Configuring GRUB or LILO for Dual Boot

System Administration Specific

* Micro-intro to Text Editors
* Adding and Deleting User Accounts
* Basic Firewalling/Masquerading with iptables
* Compiling a Custom Kernel with lackernel
* Very Concise Guide to Updating and Compiling Your Debian Kernel

Desktop Apps

* Santa Fe Phone Book for Firefox

Programming

* Subversion