I used to run Debian - my Debian configuration notes (probably very outdated). I'm running Arch Linux now - here are my Arch Linux configuration notes. Here you can find how I installed and configured ArchLinux on ThinkPad R500. And here are some of my configuration files and handy scripts.
Solutions for a few networking challanges (mainly SSH).
Some useful Linux commands.
Commands for CVS.
Linux at CERN.