How do you set up Ethernet?

First, make sure it is actually an Ethernet cord, since Phone Lines and Ethernet cords are commonly confused with each other. But if you know its an Ethernet cord, look for a fairly large port that looks rectangular, google a picture of an Ethernet port and look for it on the back of your computer.

Once you find this port on the back of your computer, plug one side of the cord into it, then the other side into your modem or router.