Excited!

First, I will neeed to give some of my background. I started receiving mailings from the Society a few years ago. I took it as entertainment, ordered the first book, and then ignored the mailings. I was happy with my purchase, but not yet ready to ditch my mysticism. Recently, after struggling with my philosophy, I picked up my package of secrets and had the startling realization that THIS BOOK is what I had been waiting for all along!
It was difficult to find the society on the web, but after a little diligence I stumbled on to the secret website. I was in awe of the discovery and signed up immediately. I joined right away because I thought I’d be by myself, the only person I’d ever know who agrees and is trying to live the material. It’s amazing to me that there’s a place where people who agree with these concepts can meet and network.
Unfortunately, it’s clear to me that I’m behind on my reading. Since I stopped responding to the mailings after my first book, I am in need of the other heirloom packages. So my question at this point is where do I find them?