If you check online, there are a lot of companies who are selling Homemade Biodiesel Kits and books that will tell you much about making homemade biodiesel. The advantages and even the disadvantages, what you should watch out for and what gadgets you should be using when making biodiesel. And of course, what is the best ingredient to use when making biodiesel. Of course, you have to know that the ingredient used would be biased depending on the location of the maker. Anyways, these tutorials will also tell you the most common mistakes people do whenever they make a biodiesel which is good for you because you will no longer have to commit the same mistakes yourself.