Accelerate to about 30 mph, and rapidly slow the car to the point just before stopping. Repeat this at least two more times. The purpose is to make sure the pads are fully seated and to smooth out any rough spots on the new pads.
Tips & Warnings
Make sure the grease from the pads does not contact the surface of the pads or the rotors. If this happens, thoroughly clean the parts with brake cleaner.
Brake fluid rapidly absorbs water once the container is open. Use fresh fluid to fill the master cylinder.
Brake fluid will damage paint. Clean any fluid off the paint, immediately, with water and rags.