okay well i dont have brakes

[frog210]

I was getting ready to head to work, so I warm up the truck, get in it, pressed on the brake and that thing went down easy... I pumped it like 3-4 times and it for hard, so I moved it up the driveway, like 40ft and press on the brake it did the same thing had to keep pumping it to stop it,
I think it has a JB1 brake system, manual brakes, disk front drum rear, checked the rear wheels and drums to check for leakage, but found nothing... The original master cylinder is leaking around the top

So I'm going to go to autozone and order a new master cylinder, I guess my question would be how do I go on and replace the master cylindser, I think I have to bench bleed the new one correct, any tips for a rookie?
Thanks
Posted via Mobile Device