Hi there! It's so cool that you got a Chromecast, I loved mine! Unfortunately, for Chromecast to work, it is going to need wifi access. I wanted to be sure so I did a quick double check on the Chromecast Setup page and it lists a wifi connection as an absolute requirement. When you do have the Chromecast set up on wifi, you'll be able to mirror any open Chrome tab to your TV, and also play movies through the Netflix and Google Play apps on your phone and have them appear on the TV. But the wifi is going to be necessary to start. If you don't have any internet access at this time, I'd suggest calling a few local cable companies and asking if they have internet-only pricing so that you can utilize this awesome tool. Most likely you should still be able to save money when comparing the cost of an internet-only plan to the cost of cable and internet together!