I bought a mightyvac brake bleader and am not too sure how to use it anyone every used one of these before?

 

Open the box and read the directions. Put the canister inline with the pump, so it's pump-hose-canister-hose. Put the hose from the canister over the bleed nipple and pump the handle, pretty easy. Don't pump it up too much or it will pull air in around the nipple.