Think of the Roku like a tiny cable box that comes in either hockey puck shaped or flash drive shape. With the hockey puck you use an HDMI cord and plug it into the side/back of tv. The flash drive type plugs directly into the tv. I use my wireless router that's for my computer to communicate with the Roku to make it work. Roku has lots of free channels and "pay for" channels. You use your computer to set up a name and password for the Roku and then you see the beginning screen From there you pick and choose what you want to see when you turn it on. I use it to watch Netflix in the bedroom and had to give it my email address and password that I had previously set up for the Smart tv in the den. I am 60+ and found it very easy to set up.