Advice on more casual sex?

I dont really have a place to take them to (I live in a multi generational home)

Im just fresh out of a divorce and want to try more things since I never did in my youth. I dont know what are the best practices to stay safe but also have fun.

Birth control is not what im worried about. While I can't be on hormonal BC I can find other options (not silly things like rhythm or pull out) and talk to my GYN

Im meaning safety things that I would have either learned younger or learned from gal pals. I was married young so I never got these talks with my friends.