bleeding brakes?

I broke the rear right brake line... I replaced the line but cold not get the bleeder open. I am looking to good (not the best) brakes to get this home so I can do it right at my place.

so I was planing on bleeding the brake from the line. this should work right? will I have to bleed all wheels or just the one with the broken line. what are the bleeders for on the master cyl.? I just need to get good peddel and good enough stopping power. please help.

Jim