i would say learn ARC welding first. it's the true roots welding and it's a lot of fun. i won't go as far to say "anyone" can MIG weld, but it's not very difficult and once you can ARC weld, you can MIG weld, easy. if you can learn how to set your amps, select the right rod for the metal and causally strike up and arc without it sticking to the metal and then j-weave (how i do it) on down the seam to make a pretty bead, youre unstoppable. . . . that way if you are in a shop and need to weld and that guys dads old Lincoln ARC welder that's been sitting in the corner is just collecting dust, you can fire it right up and do the job. no need for gas, and wires.
but that's just my opinion. i have to do a lot of "custom fab" i'll call it, for work. aka, cut and weld up a bunch of angle iron for different shit, and all we have is an ARC welder. in high school the MIG welder was what the girls used
yes i went to a high school that rural