Lubricate the nailer with air tool oil. This tool should have came with the Ryobi H250SF finish nailer, but is also available to purchase alone at the home improvement stores. Add a couple of drops of oil to the air fitting.
Push the latch release to open the magazine. Load the strip of nails with the heads pointing up and the points facing down. Slide the magazine in fully to close.
Hook the nailer up to the air compressor for the air supply. Plug in the air compressor and turn it on.
Press the actuator foot against the nailing surface to depress it.
Pull the trigger to drive the nail into place. Two different settings allow for you to shoot one or multiple nails at a time. Allow for some recoil from the nail gun once the fastener is driven in.