Using your Envy Prodigy S9 Complete Scooter is easy. Just step on the deck, hold the handlebars firmly, and start pushing off with your foot. When you want to stop, use the nylon brake system. Make sure to wear proper safety gear like a helmet and knee pads. For maintenance, regularly check the wheels. If the 120mm x 24mm GAP core wheels start to show excessive wear, consider replacing them. Keep the grip tape clean from dirt and debris to maintain a good grip. Also, check the bolts on the handlebars and deck periodically to ensure they're tight. If you're using wheels up to 125mm x 30mm with the Alu Diamond IHC Forks, make sure they fit well and don't cause any issues with the scooter's performance.