Take an "adult/continuing" education class on welding at a local trade school or college. There's nothing like an instructor right there to help you along.

Here's a couple tips on getting started on the MIG.

1. Weld forhand. That means if you're right handed, hold the tip against the surface angled to the left and while welding, push it to the left.

2. Do a practice sheet. Take a flat piece of sheet metal and make a pass across it. Observe the results and change something like the voltage - say, bump it up a notch and make another pass observing the results. Keep repeating this in a systematic manner making a small change either to the feed rate or the voltage until you get a feel for what the adjustments do to the weld quality.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250