How do you hook your Xbox 360 to the internet?

Ethernet/Cable (if you have an older version like myself)

or

Wireless (most newer models have it built-in, but you can get an adapter for the older versions that plugs into the back of the xbox)

If you can't do that then you need internet service

if you have that - you need a router

if you have that - you need to plug in the xbox

if you have that - make sure the wires for internet are hooked up to the xbox

if you have that - go to system settings on your xbox, and find network connections, from there you should be able to find your network.