Using the DeWalt DWHT75021 is a breeze. First, load the staples or brads from the bottom of the tacker. It's designed to be user - friendly, so you won't have any trouble with the loading process. You can adjust the power using the power adjustment dial according to your task. Whether you're installing carpets, insulation sheets, or attaching trim, this multi - tacker has got you covered. When using it, make sure to hold it firmly with the ergonomic grip to ensure safety and better control. The integrated wire guide helps you align the staples or brads properly. As for maintenance, keep the tacker clean after each use. You can use a dry cloth to wipe off any dust or debris. Also, check the staple and brad loading area regularly to make sure there are no blockages. If you're not using the tacker for a long time, store it in a dry place. And don't forget to use the lanyard slot for added security when working at heights or in situations where the tool might be at risk of falling.