Where can I find information on the business side of producing rap beats?

I'm trying to find information on how to make money making beats. Either by providing beats for MC's, getting radio play, performing at parties or events, or by selling for publishing rights. Thank you.Where can I find information on the business side of producing rap beats?The website I'm leaving in the source section has a service that lets you upload different beats and charge people certain amounts of money for limited rights to each beat.