I have more than one computer and want them all to be able to use the internet – do I have to use WiFi?
No, not at all. If you have purchased a router for your internet connection (see FAQ above), then you will have a number of network “ports”. These are the sockets at the back of the router that you plug the network cable from your computer into. You can have as many computers as you have ports provided you have a cable for each. The router will make sure that the machines can all share the internet at the same time.