Using the DeWalt DCS369B reciprocating saw is a breeze. First, make sure you have a fully - charged 20V MAX battery (sold separately) and insert it into the saw. Then, use the tool - free blade release to attach one of the included blades. Hold the saw with one hand, and you're ready to start cutting. Use the variable - speed trigger to adjust the cutting speed according to your task. The pivoting shoe can be adjusted to get better control and more accurate cuts. When working in dark areas, turn on the LED light to illuminate your workspace. As for safety, always wear safety goggles and gloves. Keep your hands away from the blade when the saw is running. When you're done, remove the battery to prevent accidental starts. To maintain your saw, clean it after each use. Wipe off any dust or debris from the blade and the body of the saw. Periodically check the blade for wear and replace it when it gets dull. Store the saw in a dry place to prevent rust and damage.