An example-
I need some TIG lessons! I've done some on stainless, but not much. Gas, for that matter, I got a full torch rig and need to learn to gas weld. I hear it's similar to TIG.
Oh, PS- Brake Cleaner and Scotchbrite followed by lacquer thinner is pretty good for getting anti-spatter off for paint. I've never really needed to use it in the automotive arena, things just dont seem to get that hot, and whatever there is just dusts off afterward.