Welder advice - where to start

I just cracked open the hobart here. I got it about a month ago, but haven’t had a day off until yesterday. Acme tools usually has sales and I got 150$ off 750$ or more purchase. I couldn’t be happier with it. My Lincoln 140 just didn’t have the balls. I use it now mostly if it has to leave the shop. The Lincoln square wave pro 175 I got from my Aunt’s fathers wife when he passed. One of his friends told her it was worth $50. So that’s what she sold it to me for. Helium, argon, filler rod, tig and stick leads, two foot pedals and a hood. I ran over there before she changed her mind. Like I said, I only opened the Hobart yesterday, and so far I really like it. I ripped some spot welds and burned up some wire on laps and butts. Very pleased. Only used the 220V so far. And on everything, ditch the stock ground clamp and buy a real one
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