This is my collection of online resources about biodiesel.
By far the best how-to resource is this site:
Piedmont Biofuels is one of the leading biodiesel-in-real-life resources in the country. They make fuel on a rather impressive scale, the offer some of the best classes, and they are just really cool people. The education section on their website has tons of info about biodiesel:
Other Related Stuff: