Auto body repair & detailing: Brakes, brake cylinders, bleeders

Question
How do I remove air from the brake lines after changing the master cylinder the rear has drum and the front has regular on the front the calapers have two pistons this is for a 1978 f250 I am trying to restore

Answer
I am not a mechanic but this is a fairly simple question If you know how to bleed a brake system. Get someone to help you, have one person push down on the brake pedal, once down, open the bleeder on one of the brake cylinders or calipers. Let the go down all the way then tighten the bleeder. Do each wheel three or four times. If you had done a bench bleed before you installed the master cylinder, you might not have had to do this. It's always good to have a little knowledge before you start a project. No question is a stupid question.
Also, be careful with the bleeders, they will break easy.