Connect an argon/CO2 gas hose to the welder, if you are using solid-core wire. If you are using flux-core wire, proceed to the next step.
Squeeze the trigger of the welding torch to find a wire feed speed that you are comfortable with. The wire, at all times, should protrude about 1/2 inch past the welding torch.
Orient the welding wire toward the joint to be welded, and stroke it against the surface of the joint to ignite a welding arc.
Experiment with different welding motions. Moving the welding tool in a long, straight line will allow for a narrow, deep weld bead, while moving the welding tool in a curved motion will create a wider bead with less penetration.