If you have not done so already, register an account on this website.
Purchase a subscription or single purchase viewing option.
Make sure your transmitting device and Chromecast are on the same WiFi network.
Click on the "cast" icon on your video player or browser tab.
If you have issues, consult Google's documentation directly here: https://support.google.com/chromecast/topic/4602553
If you have issues, redo the steps completely or send us a message here: https://derbynation.tv/support