How to make a Minecraft Server so people can play on it and I don't have to be on it?

All I want to know is how to let other players play on my server without opening to lan or any of that stuff. I also want to know how they can go on my server without me being on it or anything. Please answer this question As soon as possible!

You could always join this server. There are hardly any players and its a pretty good server!
valiantpvp.beastmc.com