• Download the latest stable(?) release
• To check out the latest version from our CVS repository:

       cvs -d :pserver:cvs@cvs.hypermail.org:/CVS login
       cvs -d :pserver:cvs@cvs.hypermail.org:/CVS checkout hypermail
       cvs -d :pserver:cvs@cvs.hypermail.org:/CVS logout
  

• Read documentation
• Read the FAQ
• Browse the mailing list archives - this also serves as an example of what Hypermail can do
• Search the mailing list archives
• You may subscribe to the list by sending a message with the word "subscribe" in the Subject: field to hypermail-request@hypermail-project.org (Note that the list of subscribers to this list was lost in Feb 2007 - if you were a subscriber then and haven't gotten emails since, please resubscribe).
• Browse the CVS entries
• Adding a search engine to your Hypermail archives

The old Hypermail page may have some more info, but it doesn't seem to be maintained as of 2004-05-25.