Dont you mean "How do I get into fights for free?"

Basically you would start at amateur level officiating kids on a voluntary basis. You progress through the ranks taking in clinics and rules tests until one day when your all growed up you apply for a proffesional officials license at a governing body.

Apparently officiating is quite difficult to get into, well in England anyway, I heard on a TV programme that there are an awfull lot of people wanting to be officials.