How to get a copy of a minecraft server world if the owner sends you the server files?

I'm an admin of a minecraft server and i wanted to get a copy of the world so i can play it in survival offline. If i have the owner send me the files, can i make a copy and how? If there's a youtube tutorial that would help.

Yes, you can make a copy. The world is saved in the folder called "world".
You copy that and put it in your single player saves, which are saved in the minecraft installation directory.

On Windows this can be found by pressing windows key + r and then typing %appdata% and pressing enter. Then go to.minecraft and then paste it in the folder called saves.