This brushing action is very different from ordinary manual toothbrushes, as it does the job of brushing for you. Be sure to guide the brush head to all parts of your mouth.
Rotating Electric Toothbrush Instructions
Hold the brush parallel to the floor, against the side of your teeth.
Guide the brush head slowly from tooth to tooth, following the curve of the teeth and gums.
It isn't necessary to press hard or scrub. Simply let the electric toothbrush do all the work.
Hold the brush head in place for a few seconds before moving on to the next tooth.
Please read the entire article, found at DentalCare.com, to see more detailed information on how to use an electric toothbrush.