Using this DeWalt brad nailer is easy. First, insert the brad nails into the nailer following the instructions. Connect the 1/4' swivel fitting to an air compressor. Hold the nailer firmly against the surface where you want to nail and press the trigger. Make sure to wear safety goggles when using it. As for maintenance, after each use, clean the nailer with a dry cloth. Store it in the provided carrying case to protect it from dust and damage. Check the no - mar tips regularly and replace them if they're worn out.