You need to send an e-mail to Peter Murray at kkytbs-editor@mail.kkytbs.org. Let Peter know if you want to participate on the unmoderated list AND the moderated list. Membership on the moderated list is required for membership on the unmoderated list.
After you e-mail him requesting to be on the listserve, you will then be sent a questionnaire. When you have answered all the questions, e-mail the answers back to Peter. He will then check your answers and subscribe you to the listserve.