Never used a tool like this. He flipped through the manual, adjusted the pressure in the air tank, loaded the staples, and began hammering nails into a test piece of wood. I had to experiment a bit to get the sensors set up properly and everything worked fine after that. Sometimes it won't fire (nail won't come out), I don't know if I do or something. When I'm very focused on what I'm doing, everything seems to work fine. After a few nails, I get into a not-so-focused rhythm one day and then it seems like he's missing a nail (maybe I even let the pressure off the bare minimum). But as a casual hobbyist, this works for me.