Using the DeWalt DWHT55129 wrecking bar is easy. For prying tasks, use the rounded 90° end. Place it under the object you want to lift or move, then apply pressure. The tri - lobe design makes it comfortable to hold while doing this. When you need to remove nails, pick the appropriate nail puller based on the nail size. The pointed beveled ends can be inserted near the nail head to get a good grip. As for maintenance, after each use, wipe the bar clean with a dry cloth. Keep it in a dry place to prevent rust. When not in use, store it safely to avoid any damage. Always wear safety gloves and goggles when using this wrecking bar to protect yourself from potential injuries.