what a wonderful feeling!!!!

Theres some good words of wisdom in wet blanket post.
To many new welders get over confident with Mig welders as it's fairly easy to make a good looking weld right off the start with very poor penetration.

Mig is one of the easyest welding methods to get cold lap. Cold lap is where the weld puddle penetrates one side of the base metal and not the other side. Welding angle iron is where cold lap will show up the most as looking at the weld it would seam penetration was equal on both legs of the angle iron when really it's only penetrated one side. Another place cold lap occurs alot with Mig is when you stop and restart a weld.

It would be to your benefit to take a Voc-Tech welding course, about $100, as it will greatly speed up your learning curve. You then can go home and practice with your machine. Most Voc-Tech schools have top of the line welding eqipment so you will be able to tell if your equipment at home is adaquote or if there is a problem. You will also enjoy welding and your home projects more if they always turn out good. Something else that will happen with learning at home, you will pick up some very bad welding habbits that will be very hard to break after you enter a school thus it will slow your learning down.

Congrats on getting started tho!!!

T_Bone