Using the DeWalt DCBL722B handheld blower is easy. First, make sure the battery is properly inserted. Then, hold the blower with a firm grip. The variable speed trigger allows you to adjust the power according to your needs. You can lock the speed if you want to keep a constant airflow. When using the concentrator nozzle, you'll get a more focused and powerful stream of air for stubborn debris. As for maintenance, after each use, wipe the blower with a clean, dry cloth. Periodically check the motor and fan for any blockages. Store the blower in a dry place, away from extreme temperatures. Also, follow the battery charging instructions carefully to ensure long - lasting performance.