When it comes to replacing brakes, the first thing you need to know is what parts on your car need replacing. When replacing brake parts, it's always best to replace the parts on both sides of the vehicle at the same time.
If the brake pads are worn unevenly or are below their minimum thickness, they will need to be replaced. To replace the brake pads (and rotors, calipers, and flex hoses) you will need to support the car on jack stands and remove the wheel. Next, you will need to remove the brake caliper from the vehicle. On some cars, this may be done with clips, but usually, the calipers are attached to caliper support brackets on the car with a couple of bolts. Once the bolts or clips are removed, you may need to use a screwdriver to lightly pry the caliper and pads away from the rotor. Never let the caliper hang from the flex hose as this can damage the hose; instead, support it on part of the suspension or frame, or use a jack or axle stand.