I "do" system administration. From servers to workstations, Windows, OS X, and Linux, I take care of technical issues at my school. To be honest, this is one of things I really enjoy about educational technology. I've always been curious, and system administration presents ample opportunities to look for problems and try to solve them. Along the way, I have learned quite a bit. In the interest of sharing, here are the tools I often use to understand / grok computers, servers, and networks: 1. Sysinternals 2. Wireshark 3. Ubuntu on a USB disk 4. ubcd4win 5. PUTTY 6. All the normal Linux tools 7. Cocktail 8. Carbon copy cloner Of course there are many more utilities I use, but these are the ones I can think of off the top of my head. I'll add to this page as time goes on. I've been meaning to write a cookbook for a while, so this post will probably serve as a start.