There are a few other sites that explain how to build a shoebox type setup, but still don't have a true step by step setup.
There is a site selling kits that have everything you need including developing solution and Holographic plates and/or film. They are between $99 - $125 for the whole kit.
I figure I have spent a crap load on this hobby, I might as well start another one that will suck more cash from me.
I just really want to make a Hologram of me flipping the bird, so when you walk by it you see my middle finger come up.