I had seen this ad on Craig's List a few times for a 3-hour semi-private MIG welding class for beginners, and MIG welding had been something I'd been wanting to learn for absolutely ages. So, being as I've got some welding projects coming up and I had to head down that neck of the woods anyway, I decided on the spur of the moment Friday afternoon to give the guy a call and see if I could get in on the Saturday morning class.
Well I was able to, and when I arrived at the guy's place the other two guys he had scheduled for the class had both cancelled so I got 3 hours of private instruction for $100! Not too shabby.
I got some time on both a 110v gas rig and on a 220v rig with flux core. From my experience today, I can't imagine the home hobbyist (especially for auto-body sheet metal) ever needing more than the 110v gas rig. I can now lay down a pretty good bead with both (although I like the cleaner welds with the gas) and have some inkling of how to gauge the way things are going based on the sound the weld is making and how the puddle looks.
Of course I still need tons of practice time on my own rig, but a pretty cool introduction! SO glad I finally did this.