1) get a mig welder and spend the extra bucks for a gas setup.Probably opening a can of worms here...
I'd like to learn how to weld and don't have time to take a class. Basically trial and error learn as I go, on both thick metal and sheet.
What's a good beginner model and type of welder? Something I can watch for sale groups for...
2) I would recommend looking for a used 110v Lincoln or other reputable brand from someone upgrading. You'll get a higher quality setup vs something from harbor freight or similar. I traded a $150 tokarev for it and the guy even paid the ffl transfer fee (because California). New it would have been $500ish.
3) one of the best initial projects is your exhaust system. Mock it up, tack the pieces in place and then weld it off the car. Simple welds and if they are boogery, well it's under the car and if it doesn't leak who cares?