Using this Westward air compressor is easy. First, make sure it's plugged into a 120V power source. Then, turn it on and let it build up pressure to the maximum 135 PSI. You can use it for tasks like inflating tires or powering air tools. When using, always keep an eye on the pressure gauge to avoid over - pressurization. For maintenance, clean the compressor regularly to prevent dust and debris from building up. If you notice any unusual noises or performance issues, turn it off immediately and check for problems. Also, since it's a used item, be aware of the existing marks and scuffs, but they shouldn't cause any major problems. Remember, this item can only be picked up locally at the MSU Surplus Store.