Hi, I'll try my best to answer your questions, although I'm fairly new to the site myself.
MH is the Barefoot Herbalist, this is his personal forum on Curezone.
Basically, through this site you can learn to revitalize several ways, including the use of the OJ fast, Book I, Dr. John R. Christopher's teachings, developing and applying knowledge of herbs, reducing toxin load, improving digestion, etc. But we also talk about softball and classic cars too. :-) It's a friendly community. MH usually posts once or twice a day, he's very active on the forum.
Go to the forum Descriiption link above and it will tell you a lot more.
I too found this site through researching Hulda Clark, but find the methods and reasoning here far superior. You'll find many knowledgeable contributors here. I encourage you to peruse the archives, there's tons to read, you may find yourself up 'til the wee hours of the morning engrossed!
Oh, the pre-cleanse kit consists of herbal forumals which clean the kidneys, intestines, liver, gallbladder, removes parasites, etc. It's a 30-day cleanse. Probably a good preparation step before an OJ fast.