+A guide on using Zephyr today with BarnOwl (and GNU Screen). Aimed at newcomers to Zephyr, and a pretty good reference. See also [the BarnOwl wiki](https://barnowl.mit.edu/).
+
+* [[Using `zcrypt`|doc/zcrypt]] <br />
+A guide to using `zcrypt`ed (encrypted) zephyr classes. Zephyr at MIT (mostly) doesn't support limiting who can sub to a zephyr class, so if you want to have reasonably private conversations, encrypting them is a good idea.
+
+* [[Using SZS (the SMS to Zephyr Relay)|doc/szs]] <br />
+Send and receive text messages through Zephyr.
+
+* [[Using Screen|doc/screen]] <br />
+Handy for [[doc/Zephyr]] and anything else you do in an ssh session.
+
+
+### Kerberos and AFS
+
+* [[Kerberized Server|doc/kerberized-server]] <br />
+Explains keytabs and how to get one and how that lets you SSH somewhere with Kerberos.
+
+* [[Root Instance|doc/root-instance]] <br />
+Explains root and extra instances in Kerberos.
+
+* [[Using Athena|doc/using-athena]] <br />
+An introductory guide to Athena and AFS, presented as a tutorial to set up a small web page. Prerequisite: knowledge of how to use the command line.