The Craftsman 2.0 Hot Dog Air Compressor is very easy to use. Start by plugging the air compressor in and attaching the tubing to the quick connect valve on the side. There is no need to check the oil level since this air compressor uses an oil free pump. Turn the pressure switch on and use the knob to adjust the pressure. Keep an eye on the gauges to monitor the pressure and turn the switch off when you’re done.