Using this set is easy. You can play around with each of the 8 full bottles in the set. For example, you can use the Gear Remote to interact with the Gear Engine. Just hold the Gear Remote and point it at the Gear Engine to see how they work together. When handling the Scissor and Spanner, be careful not to drop them as they might break. As for maintenance, keep the set in a dry and cool place. Avoid exposing it to direct sunlight for long periods as it could damage the colors of the bottles. Also, if any part gets dirty, you can gently wipe it with a soft cloth.