Background: I am tired of paying to get my tractor trailered and taken to a welder with great equipment and high prices. I am looking for a minimal welding system for patching, small fab work.

1. what type of welder is easiest and cheapest?
2. do I need 220 or can I go to one of the 120 Amp units?

If you could, could you identify what welding you do with what you are recommending?
thanks!