Using the Klein Tools 66385 Steel Scratch Awl is quite simple. When you need to scribe metal, just hold the awl firmly and draw it along the metal surface with a steady hand. To start a screw hole, place the tip of the awl where you want the hole and gently tap it with a hammer. For piercing and punching jobs, position the awl correctly and apply appropriate force. As for maintenance, keep the awl clean after each use. You can wipe it with a dry cloth to remove any debris. Since it has a black finish for rust resistance, avoid exposing it to excessive moisture. If you notice any signs of dullness on the blade, you can sharpen it using a proper sharpening tool. Also, always store the awl in a dry and safe place to prevent damage.