Using the Stan's DART tool is a breeze. First, make sure your tire has Stan's sealant in it. When you find a puncture, simply take the tool, place a DART on the head, and insert it into the hole by pressing the tool until its head touches the tire. This will ensure the DART goes in at the right depth. If you have a large slice or multiple punctures, you can use the double - sided head to quickly install two DARTs. As for maintenance, keep the tool clean and dry when not in use. Make sure to store it in a safe place so it doesn't get damaged. And always check the DARTs are properly sealed and ready for use before heading out on a ride. Avoid using excessive force when inserting the DARTs to prevent any damage to the tool or your tire.