How difficult would it be to learn to weld. I'm not talking complex underwater welding or anything on a commercial level. I'm talking about simple stuff. Like fabricating roof racks, brackets, target stands and stuff like that. Not too worried about how pretty it looks. Just functional. Do I NEED to take a college course? Or is it something that someone can show me over a weekend? Additionally.. from nothing to basic set up.. how much money are we talking for total investment to buy the tools and equipment (not counting materials) to weld together rebar and angle iron? This is a skill I am lacking in and rather than just "wish I could do that" I'm interested in learning it.