Anything Goes : Pure gumption to start a small video productions company by Dinar Wibowo

For awhile, I've been thinking about starting a small video productions company. I have a few years of production experience under my belt and enough of the necessary equipments (for now). But my business knowledge is very minimal. Sure I have started working as a freelance videographer and editor since the last few months but it's nothing compared to actually starting a small business. Is there anyone who could give me some sound pointers? Or perhaps point me to any book or article? I would sure appreciate the help!