Using this Teamsterz Load & Launch set is super easy. First, turn the cog on the wheel - shaped case to open the car - loading magazine. Then, load up to 15 cars into it. After that, pull down the door and press the launch button to shoot out the cars one by one quickly. When you want to play with more tracks, connect the set with extruded track. And if you want to play somewhere else, just carry it by the handle. Here are some notes: Make sure to keep small parts away from children under 3 to avoid choking hazards. Don't use excessive force when turning the cog or pressing the launch button to prevent damage. For maintenance, clean the cars and the launcher with a soft, dry cloth regularly. If the set gets dirty, you can use a mild soap solution, but be sure to dry it thoroughly afterwards.