Comments: GnuPG tutorial

I'm going to be giving the GNU Privacy Guard tutorial again in a couple of
weeks.  I wonder if anyone has comments on my notes I used for last semester:

   http://www.cs.uvm.edu/~dvanhorn/gnupg.html

This semester I'm going to discuss a little more of the theory of public key
encryption before getting into the details of gnupg, now that I'm taking 266.

I recently found the following set of notes I'm going to review and will try
to draw from.  Any other pointers would be appreciated.

   http://www.math.utah.edu/~beebe/PGP-notes.html

David