The instruction manuals are clear and concise and include a diagram of the intestines/colon and a diagram of the liver with its veins. There are dangers to the coffee enema and the castor oil enema, and I was unaware of them before I read the manual: your body needs to have all of its nutrients before the coffee enema because that drains away nutrients. So, 3 juices/coffee enema. And, since I'm anemic, I'll need to wait until I am no longer anemic before doing it. Also, I had never done an enema before, and the manual advises to begin with water enemas. Well, it was a bit of a mess the first time, and the second. And by the third time I got more used to the process and was trying the different positions for flushing the water through the colon (the colon is shaped like an upsidedown U). The castor oil enema releases all the toxins from the cells, which sounds great, but if someone's just gotten chemotherapy and is soaked with toxins, they can overdose from having those all released, and are better off waiting a few months. This was all in the cute little manual.