the best is to get 2 people. Have your wheel off with newspaper all around and make sure you get the proper size wrench and are turning in the correct direction..don't strip them..don't ask me why I included that
have someone inside the car pump the brakes up till they are hard and have them keep the pressure on. loosen the valve and air (if there is any) will shoot out and then fluid will shoot out. You repeat this till the only thing that comes out is a stream of fluid, no bubbles or anything. They sell self bleeder valves, but personally I wouldn't trust them. You could also buy a plastic hose that will fit over the valve..loosen the valve first, slap the hose on and have the other end in a constainer of brake fluid..then pump the pedal yourself and the air will be pushed out and the only thing that can get sucked back in is brake fluid. I think getting another person is easier.
~Ted