Using the NCM M7 Electric Mountain Bike is easy. First, make sure the battery is fully charged using the provided Das - Kit 48V 4A charger. Turn on the bike using the power button on the Das - Kit C8 display. You can use the Das - Kit T7 controller to adjust your speed and other settings. When riding, be careful on different terrains and always wear a helmet. For maintenance, keep the bike clean after each ride, especially the chain and gears. Check the tire pressure regularly to ensure a smooth ride. If you notice any issues with the battery, motor, or other components, it's best to take it to a professional for repair.