Most new cars require brake service during the first 30,000 to 42,000 miles. It is also important to inspect them for wear before every winter and summer, because extreme temperatures may affect the brakes' effectiveness. Most basic brake repairs are relatively simple to do, as long as you work slowly and carefully follow the manufacturer's guidelines.
Buy the Service Manual.
It contains essential information for doing the job right the first time.
Getting Started
Jack the car up and remove the wheel and tire.
Remove the Caliper.
Check to see how much friction is on the rotor by turning it by hand. A small amount of drag is normal. Remove the caliper so you can inspect the condition of the rotor. To do this, loosen the bleeder screw, located on the back of the caliper. Then, disconnect the flex hose, (which is connected from the caliper to the car) by loosening the fitting that attaches it to the car. At this point, place a your metal pan beneath the caliper to catch any remaining brake fluid coming out. Then, remove the caliper retaining bolts and rock the unit back and pull it away from the rotor.