Ok first things first: what people are talking about is SELF sheilded flux core wire which is junk. It will stick stuff together, but doesn't work well. There are 110v inverter machines which will give you 150amps either with tig or stick, but they are around $1,000. If you have zero welding experience I would suggest that you get a mig welder as it's much easier to learn than stick welding. You will need shielding gas 75%argon/25% CO2 for steel. If there is a local weld shop, maybe hit them up and ask if you could have some steel scrap to practice welding as steel is $.02 a Lb. in scrap price. You could use a grinder with cutoff wheels to do your cutting, but they get expensive for the amount you would use to build a whole cooker. A oxy-fuel torch will do well and you can get a small one for not a whole lot. A plasma is nice, but they are expensive.