How would I create a wired home network?

[efflandt]

You need a modem and router for whatever internet connection you have (or a combination gateway device) and a bunch of ethernet cables. Or if you do not need internet, you could do it with just a broadband router and bunch of ethernet cables.

Another option if the devices are not all in the same area would be powerline networking. Each module plugs into an AC power outlet and has an ethernet port (or some have multiple ports). You plug one module in where you have a wired network and another where you want to connect something wired to that network. Although, the modules may need to be on the same electrical circuit.