Integral Hyroponics is a good sourse for general information. It includes directions for setting up a grow room and a grow closet. Explains the different sytems and cover all the basics. Its not MJ specific, in fact I don't think the word is in the book. The Indoor marijuana Growers Bible by Cervantes is a good background on MJ and lighting but doesn't include a lot about Hydro. I understand he has a downloadable version that does. I haven't looked at that one. Some here have suggested it. I hope I don't look foolish.