Using the Brio Cargo Harbor Set is easy and fun. First, place the container ship in the water area and let it sail towards the harbor. Once it arrives, use the multi - function crane to load the cargo onto the battery - operated train on the track. Slide open the boxcar doors gently and put the cargo inside. When the ship is ready to leave, open the bridge so it can pass safely. Remember, this set is for kids aged 3 and up, so adult supervision might be needed for younger children. To keep the set in good condition, store it in a dry place away from direct sunlight and clean it with a soft, dry cloth regularly.