Truck Repair: Quick Question, brake bleeder, wheel cylinder

Question
Hello Kind Folks,
            If I have already asked this question please forgive me,I will give you a good rating nevertheless.I am for the first time getting ready to replace a brake line from my passenger side wheel and I am no mechanic.I was curious what tools I might need and do I need to take off the whole brake drum?It is on an old 1970 Ford Pick-up.Also,briefly how do I bleed this when I'm done and do I need to bleed the whole system?Any help would be appreciated.
                  Sincerely,
                  Skyler

Answer
Well first you need a line wrench that fits the line at wheel cylinder.You should not have to pull the drum off to change the line.If it is a front wheel,you might have to get a  screw driver to get a clip off the rubber line in the bracket.You will need a brake bleeder or another person to help with the bleeding process.The whole system should be bled to be safe to get all the air out.