Simplest way to get started is to use the foot pedal with 2T (two touch). So, set settings to TIG, DC, 2T and Pulses to off. Make sure gas is flowing, ie open the gas tank valve. Depress foot pedal a little at first, in order to see gas fill the canister (there should be a metal bulb and the pressure gauge should increase). Press harder on the foot pedal to ignite the arc. You will see and hear the gas start to flow. Then, pressing the foot pedal more will increase the flow of gas and make the weld pool larger.