Tig Stick Arc

What type of welder is best to use for starting out?

I just used a tank torch w/Welding Tip when I was younger. I would like to weld together some framework for a trailer, maybe a ladder rack for my pick up that sort of thing do I need to have a mig a tig an arc? can it be something I can plug into standard outlet. I know enough to hurt myself so I’ll obviously need one that I can learn with but that will do bigger jobs once I have an idea what I am doing. I don’t have much mulla either so I want something cheap or my wife will have me welding a skid plate for my but as she boots me down the street. Maybe I should just stick with torches and coat wire.

These days you can purchase a welding machine that has ARC, MIG and TIG capabilities. These machines generally are not AC so you won’t be able to aluminium weld with the TIG side. MIG is fine for aluminium, can be tricky though. Could be a little expensive but you will get three welding operations in the one welder.
When welding up your trailer either the MIG or ARC would be fine. MIG is quicker as you dont need to change rods or chip the slag away from the weld. Gas shield MIG will give you cleaner welds, but if you are going to be welding outside go gas less. A breeze can and will blow the shielding gas away from your weld leaving it honeycombed and very weak.