Using the DeWalt 20V Max 23Ga Pin Nailer DCN623B is a breeze. First, make sure you've loaded the right size of 23 Ga. pin nails, which can be from 5/8 in. to 1 - 1/2 in. long. Then, adjust the depth of the nail drive as needed using the tool - free depth adjustment feature. When you're ready, just pull the trigger to drive the nails. Remember, the battery and charger aren't included, so you'll need to get them separately. The LED indicator on the nailer will let you know when it's time to reload the nails. As for maintenance, keep the nailer clean after each use. You can use a soft cloth to wipe it down. If there's a jam, use the tool - free jam release to clear it. Also, store the nailer in a dry place. And don't forget, it comes with a 3 - year limited warranty, a 1 - year free service contract, and a 90 - day money - back guarantee.