Using the DeWalt DCBL722B handheld blower is easy. First, make sure the blower is properly charged with a 20V MAX* battery. Attach the concentrator nozzle if you need more focused air flow for stubborn debris. Hold the blower firmly with one hand on the handle and use your thumb to operate the variable speed trigger. You can lock in the speed for continuous use if you like. When using it, keep a safe distance from people, pets, and delicate objects. Also, avoid using it in wet conditions to prevent electrical hazards. After each use, clean the blower by removing any debris from the air intake and nozzle. Store it in a dry and cool place. Regularly check the battery and the motor for any signs of wear or damage. If you notice any issues, contact DeWalt's customer service for assistance.