To join a mailing list you have to visit the Mailing List Management page. Fill in your email address and your name (if you want to). Your password is not necessary. Your request has to be approved by the administrator.
Once you become an approved member of a list you are able to send messages to the list. The lists only accept messages from members and messages are approved by the moderator so the list does not get spammed.
Clicking on any of the following links to subscribe to a particular list: