Changing the brakes on your car is a easy job and can save you a lot of money. This is a low skill level job and can be done in under one hour.
Get your car on a hard level surface and block your rear wheels so the car can not move. Then jack up the car in a safe location. Place a jack stand under the car to support it. If your using a braker bar to loosen the lugs place jack under car and raise it up slightly with out lifting the tire. Brake the lugs loose and then jack up the rest of the way so the tire is off the ground a inch or two.
Remove the tire
With a 15mm wrench loosen the two bolts holding the caliper in place. One near the top.
And the second near the bottom.
The caliper will then slid off the rotor, might take a little wiggling.
You can then use a large C clamp to drive the caliper piston in to the caliper, this needs to be done to allow room for the new pads.
Place your new pads on the brackets.
Then place your caliper over the new pads.
You will find rubber boots where the bolts go, make sure these are lined up.
Then slide your bolts back in to place and tighten.
Now put your wheel back on the car and snug up the lugs.
Lower the car until the tire is touching the ground.
Use a torque wrench and tighten the lugs to 100 foot pounds, do this in a star pattern. Pick a lug, then go in a clockwise direction tighten every other lug until all 5 are tight.
After both brakes are replaced start the car. Pump the brakes a few times, the peddle should feel firm. Once peddle is firm put in gear and drive car in 2 figure 8s. Then recheck torque.
Check torque of lugs again in about a week.