Coparenting tips?

My ex and I have split up and we want to maintain a healthy relationship with one another for the sake of our daughter. There’s no bitterness or hate. We’ve both accepted the break up. We’re still friends but this dynamic is still new to us. Should we still spend time as a family? What should we expect from one another? What would be considered overstepping? I have so many questions lol. Any advice is appreciated