Connect the propane tank or cylinder to the heater's bottom through a propane port. Twist until the propane tank is tight.
Turn the valve on the propane heater to "High." The propane will release into the heater causing a slight hissing noise.
Press the red ignition switch with your finger. This may take several tries, but keep pushing until you see the propane ignite in the heater.
Turn the knob or notch on the heater to where you wish the temperature to be.
Turn the propane heater to "OFF" when you are finished with the heater.