Good Samaritan laws are rules that protect people who try to help someone in need. The laws say that if you're not a doctor or nurse, and you try to help someone who's hurt or sick, you can't get into trouble if you accidentally make things worse.
For example, if you see someone who's passed out and you try to give them CPR (which is a way to help someone breathe), but you accidentally break a rib, you can't get sued or arrested for trying to help.
These laws are in place to encourage people to help each other when they need it. They allow people to act without fear of getting in trouble for trying to do the right thing.