The video shows how to join a home group on a Windows 7 network by helves shows you how to join a home group on a Windows 7 network of computers. It is approximately one minute thirty seconds long. To join a home group on a Windows 7 network you first go to control panel, then you click on Network and Internet, after that you click on network and sharing center, and finally click join a home group in the top right. You now select what file types you want to share with the other Windows 7 computers. Finally you enter the case sensitive password that you received when you registered your home group and you're in.