There could be two meanings of what you are asking:
World: They would need to provide a download link to their download so you can get it from that source, then type %appdata% in your Windows search when you click on the Windows Flag button. Click on Roaming, then click on the folder called .minecraft, go into the subfolder called Saves or something similar to it. Drag the file with the world in it into the Save folder and then launch Minecraft and check if it's there.
Server: You can get the IP address to the host's server and play in multi-player mode. This allows you to access to their world that they have made for the server.
somebodys birthday fiest time on earth day
You find somebodys password on google.com all you do is say "somebodys password or email" or you go on ask.com and ask! You find somebodys password on google.com all you do is say "somebodys password or email" or you go on ask.com and ask!
Yes there is such thing as the Ether World in Minecraft.
Give it back.
type the password
it means to be on somebodys side
Whats a dodog oh you forgot the space "Do dogs know when somebodys going to die?" well yea!
An underwater world seed for Minecraft is used to open an underwater world to play the game in.
Sorry it's probaly not possible ):
Yes, Minecraft is global.
No
Use your eyes.