Insert an electrode into the electrode holder. Follow manufacturer's instructions as to current amperage; smaller electrodes will require smaller amounts of current.
Scratch the metal with the electrode, in a motion similar to that of striking a match. Slightly raise the electrode from the metal to create your arc. The correct length of an arc depends on the diameter of your electrodes; arc length for 1/16- and 3/32-inch diameter electrodes should be about 1/16 inch, while arc length for electrodes 1/8 and 5/32 inches in diameter should be about 1/8 inch.
Adjust the angle of the electrode to 12 to 20 degrees from the vertical, and move your electrode in a side-to-side weaving motion. In order to keep the electrode height and angle consistent, move your body, rather than your hand, while moving the electrode.
Stop the arc by pulling the electrode away. Allow the molten pool several minutes to cool.
Remove slag using a chipping hammer and wire brush. Check your weld bead and ensure that it is as desired, before moving on to the next weld.