Congrats breh! Despite it being paid for, make sure to put a little money away every month for property taxes which are due twice a year. Build yourself a basic toolbox with quality tools. You don’t need to break the bank, but don’t cheap out on them. Stay away from husky and ryobi stuff. Craftsman and stanley make good entry level tools. Milwaukee, dewalt, and makita are a little more, but worth the investment. For hammers, i always recommend 20oz Estwings.
A basic toolset to me is:
20oz Estwing Hammer
18 or 20 volt screwgun
Large plumber’s wrench
Screwdriver set
Black oxide drill bit set
chisel
Educate yourself on where the main shutoffs are for your gas, electric, and water lines. Water fed things have their own individual valves to shut them off in case you need to service them. Just trace the water line and you’ll find the valve. Also, there’s no need to overtighten the valve when shutting it off.
Righty tighty, lefty loosey
Don’t be afraid to familiarize yourself with the attic and crawlspace. These are your friends when it comes to running wires and servicing plumbing and electrical issues.
That’s the basics. There’s a really good homeowner’s thread on here.
https://www.thecoli.com/threads/the-official-homeowners-thread.392241/
That’s the basics off the top of my head. Most of all, don’t be afraid to get your hands dirty. If you ever have any questions, feel free to ask.