how do you get air out of the coolant system.

Get the engine up to operating temperature. With the the engine idling, loosen the upper radiator hose clamp. Take a small flat bladed screwdriver and insert it between the upper hose and the neck on the radiator. Allow the engine to continue to idle until all that comes out the radiator hose is coolant. Remove the screwdriver and retighten the hose clamp.