Using the DeWalt DWHT80276 staple gun is easy. First, open the bottom - load design and insert your heavy - duty staples or 18 - gauge brads. You'll see the low fastener indicator which will tell you when it's time to reload. To use it, just hold the gun firmly and press the trigger to drive the staple into your material. Whether you're right - handed or left - handed, you can use the reversible belt hook to hang the gun on your belt for easy access. When it comes to maintenance, keep the gun clean after each use. Wipe it down with a dry cloth to remove any dust or debris. Also, make sure to store it in a dry place. If you have any issues with the gun, you're covered by a 3 - year limited warranty, 1 - year free service contract, and a 90 - day money - back guarantee.