Internet is the world wide web. You can reach billions of websites through the pathways of the internet. Internet Service Providers that bring the internet to you terminate it at a certain point in your home. At that point, a modem or similar device needs to be attached that becomes the ‘catcher’ of the internet signal coming through to you. You can now plug devices into the modem to get access to the internet. The other option, to plugging in each device to the modem, is to plug in only one device, known as the Wi-Fi router that takes the signal from the modem and, poetically speaking, sprays it around in your house so that it can be caught by devices to connect to the internet from anywhere.