How do you put the brakes on a 96 Buick park avenue?

I guess you're asking about how to bleed the brakes. Start at the aft right side tire. remove it and there will be a nipple near where the brake line comes into the caliper. Open the hood and open the brake fluid and top off the fluid. then if possible get a tube that fits over the nipple at the RH caliper and place the end of the tube into a bottle other catch basin. With two people, one at caliper and one at driver's seat, begin to follow this process: Using a #10 wrench, twist the nipple to open it slightly. Have the person at the driver's seat depress the brake pedal (I do this with the engine running). Hold down pedal and close the nipple. Repeat until no more air escapes from the nipple. It is best on the last stroke to close it DURING the depression of the brake pedal. Repeat with aft left side caliper. Repeat with front RH caliper and finish with front LH caliper. they make bleeding tools if you are onlly one person. the one I like best is the kind that you use at the caliper and it suctions the fluid through the system into it's own cup/container. Good luck! Be careful working around a jacked car. Best to use a stand under the axle.