A homegroup is a group of PCs on a home network that can share devices (such as printers) and libraries (such as your Documents, Pictures, Music and Video libraries). Using a homegroup makes sharing easier. Your homegroup is protected with a password, which you can change at any time.
When you set up a PC with Windows 8, Windows RT or Windows 7, a homegroup is created automatically. If a homegroup already exists on your home network, you can join it.
After you create or join a homegroup, you select the libraries and devices that you want to share. You can prevent specific files or folders from being shared, and you can share additional libraries later. You can choose who can and can't edit your shared files.