You are going to have more questions.
I would go to
www.weldingweb.com for good advice in the future.
Learning to weld is more than just running a bead.
Different MIG welding machines and sizes require different techniques of holding the gun and the angle of the gun. Pushing or pulling technique. Make sure to read the manual all the way through. It talks about that in the manual.
The preparation of the weld joint, and cleaning of the weld groove is very important.
The amount of "stick out" of the wire from the nozzle of the gun.
Types of welding gases and the pressure the regulator should be set at.
How to use welding tank pressure regulators and how to bleed them and shut them down.
Have fun!!