Using the DeWalt DCF845P2 impact driver is easy. First, make sure the battery is fully charged and properly inserted into the tool. Select the appropriate speed on the 3 - speed switch based on your task. For larger diameter screws, you might want to use the higher torque settings. When starting, gently press the variable - speed trigger to control the speed precisely. In low - light areas, turn on the 3 - LED work light to illuminate your workspace. Always wear appropriate safety gear like safety glasses. Keep the tool clean after each use. Wipe it down with a dry cloth to remove dust and debris. Store the tool in the provided kit bag when not in use to protect it. Check the battery regularly and charge it as needed. If you want to track the tool's location, install the chip (sold separately) and use the DEWALT® TOOL CONNECT™ Site Manager App.