Closet Cultivator by Ed Rosenthal
Closet cultivator covers the most advanced gardening techniques in plain English - not technical jargon. It shows how easy maintenance gardens are built of out simple low cost household items. And it details successful ideas for secrecy and privacy. Close Cultivator describes both soil and hydroponic gardens. This is the first book to fully explain Dutch "Sea of Green" method which produces more buds faster in less space.
Ed Rosenthal is the guru of Ganja according to High Times Magazine. He is continually researching and writing about cultivation and is active in the legalization effort.