Setting up Chromecast on your TV is simple.
Plug the Chromecast’s HDMI plug into your TV, and connecting the microUSB power cable into the Chromecast.
Plug the other end of the power cable into the included power adapter, and connect the adapter into a wall outlet.
Download the Google Home app on your smartphone or tablet.
Open the Google Home app and follow the prompted steps.
If the Google Home app doens’t automatically prompt you to setup your Chromecast, follow these steps:
Go to the top-left corner of the Google Home app’s main screen.
Add “+” > Set up device > New device.
Follow the specific steps for your device.