I am working my way through several books on solar energy, trying to find the best one to recommend to readers. Thanks to a friend who is interested in racing and has investigated biodisel, however, I can make this recommendation for those who are interested in learning how to make their own biofuel. Biodiesel Basics and Beyond by William Kemp is his personal choice among the books he has studied, covering, as he says, both sides of the sometimes controversial issues around home-brewing of biofuel.