Using this nail drill is easy. First, make sure the battery is fully charged. You can check the illuminated power indicator to see the battery status. Once it's charged, turn on the drill using the power switch. You can adjust the speed according to your needs with the variable speed control. Use the forward / reverse switch depending on the type of nail task you're doing. When using the Fine Barrel Dome Top Ceramic Bit, handle it gently to avoid any damage. As for maintenance, keep the drill clean. Wipe it down after each use to remove any nail dust or debris. Don't expose the control box and powder dock to too much acetone, even though they're acetone - resistant. If you have any issues with the drill, refer to the 1 - year manufacturer warranty and contact the customer service team.