Where/how did you learn welding? Have been considering doing a community college welding course (as they have all the equipment, instruction, etc.).
After learning, I'd have to agree with one of the other responses, learning by Youtube is probably feasible. It's safer than I expected (less concern about touching metal in the ground path) though I'd strongly recommend investing in quality gloves, a quality helmet, and good thick pants, and a long-sleeved shirt / overcoat.
I thought about taking a course but I found this way of learning a lot more fun and engaging (if you're fortunate, as I am, to have experienced people in your life).
ie galvanised stuff generates gaseous tin or zinc (~white smoke, i don't remember which). Bad in a confined space like a shed or garage.
So there are some non-obvious considerations that Youtube video's don't seem to mention. :(
something like this works well.
for thin steel or aluminum you really do need shielding gas.