An O Scale train set is great to get someone new into model trains! Most people start out with a pre-packaged train set. These "Starter Sets" usually include a power supply along with the track & train. While better starter sets usually include a more robust power source, as a general rule, the power pack supplied with your starter set is just that, a start. Williams, MTH and Lionel Train Sets, RJ’sTrains, is your source for all your o scale model train set needs.