Just take the bare minimum and spend a night near your car or home, someone you can up and leave at 2am if you need to. Take a shit before you go.
There’s not really any surprises for what you need, just take a tent, sleeping bag, warm enough clothes, a little toilet paper, water and food (just take loads of cereal bars and stuff you don’t need to cook for the first time). The only other thing to take is bin bags so you can clean up any mess you make. You should leave the place you camp as if you were never there. No food on the ground, nothing. Don’t feed the animals.
If you’re feeling extravagant you can take some baby wipes and toothpaste/toothbrush for cleaning but don’t stress yourself on the first time. If you have a garden you can even camp in your garden for the first time just to get a feel for it.
Two things. Linux certainly does have a difficult learning curve, at least compared to Windows and OSX. I’m currently in Fedora 39 and I had to dig up some terminal commands off the internet just so I wasn’t choosing between 100% and 200% scaling. That’s just beyond the average computer user.
Secondly, I wish people could stop trying to teach everyone that Linux isn’t the OS. Anyone that cares already knows, and anyone that doesn’t know doesn’t care.