The full text of this presentation (along with all of these links) is
available online at http://www.tir.com/~sorceror/quake/index.html.
Each bullet point is a link to a page with explanations, more detail,
and links to further information.
The Metro Detroit Linux Users Group's home page is at http://www.mdlug.org/.
The Quake HOWTO is at http://metalab.unc.edu/LDP/HOWTO/Quake-HOWTO.html.
This, of course, is one of the most authoritative and detailed sources
of information on Quake and Linux. It doesn't cover Quake III, or
Quake II with non-3Dfx video cards, but for basic setup it can't be beat.
Other Relevant Links: