Make sure you have HF turned on. Then the arc should self start. Also make sure your preflow is set pretty low like from 0 to half a second or so. Post flow can be in the 5 to 10 second range. The settings vary depending on the material you are welding. Initially, set start and end amps to 0. Start with DC on steel before moving on to AC and aluminum. Using the foot pedal will allow you to make changes as you weld and will help you learn what fixed settings you will need to use the torch switch.
Long arc, short arc, heliarc and in-the-dark!