Get an auto=darkening helmet, too. The hand held shield sucks. DO NOT wear anything but long pants and boots on your lower body while you weld. Don't ask. It makes the burn scar on my foot hurt. You can not untie the shoe fast enough. You can't rip it off tied fast enough. You can't get the hose nozzle in your shoe fast enough, either....

Good gloves are a blessing, too, and a good grinder with stones and flap wheels is your friend with flux core wire. Lots of splatter with flux core. The Lincoln above at least has the gas setup included.

I've welded half inch with the equivalent Hobart (Handler 135) 110 mig, but I had to chamfer both edges on both sides to get the matching edges' thickness down under a quarter, and it took two passes on both sides, and they were SLOW passes. Stay under a quarter inch and it'll weld quite nicely, and it's easy to learn on. Buy lots of extra tips, and a tip tool, and spatter release dip for the nozzle.