Is it normal for my brakes to make noise?
Occasional brake noise is normal. If a metal-to-metal, continuous grinding, or squeal sound is present, the brake lining could be worn. Have the system checked.
There is an electrical motor sound when I press on the brake pedal or activate the park brake switch. Is this normal?
Yes, those sounds are the electronic brake booster or the electronic park brake operating.
Note:   Brake dust could accumulate on the wheels, even under normal driving conditions.Some dust is normal as the brakes wear and does not contribute to brake noise.  See   Cleaning the Wheels