you are not kidding, there is a real scarcity of books out there on fasting, but the internet is a beautiful thing! there are many good websites on fasting of all sorts, but even real Water Fasting gets its due. look up these as a start:
these are only a few of what is out there. one thing not enough attention is paid to is fast preparation. many people try to jump into a fast while suffering addictions, or bad eating habits (because of, i get it). but the single best thing a faster can do for themselves is to prepare by cutting down on carbs and food in general for a week or two before starting the fast. give yourself a start date, working toward that carefully, the fast will be much for successful. also, fall and spring are the best times to fast as they are not too hot/cold. extreme temps stress the body unduly during fasting. don't put yourself through that.
let me know how things work out for you. i'm interested in your progress.