During my time at Utah State University, I gave several presentations and workshops on a variety of subjects for the Free Software and Linux Club (FSLC), of which I was also a founder and officer. I no longer have the dates of when these occurred, but these were roughly between 1999 and 2004.
I still have the slides for the them, so they are included here.
I gave a workshop on using the Emacs Text Editor.
The HTML version of the slides can be found here.
I gave a presentation in conjunction with a fellow student, David Mortensen, on the Python programming language.
The slides can be found on archive.org.
I gave a workshop on regular expressions.
Slides: