Using the DeWalt DCS367P1 reciprocating saw is easy. First, make sure the battery is fully charged and properly inserted into the tool. Then, use the keyless 4 - position blade clamp to attach the appropriate blade for your task, whether it's wood or metal. You can adjust the speed of the saw using the variable - speed trigger according to the material you're cutting. When working in dark areas, turn on the LED light. As for safety, always wear safety goggles and gloves. Keep your hands away from the blade when it's in motion. When not in use, store the saw in the included kit bag. To maintain the saw, clean the blade after each use and check for any loose parts. Also, charge the battery regularly to ensure it's ready for your next project.