[header] How to use chromecast [title] Unwrap your chromecast box. [step] You should find a usb cord and a charging cord along with the thumb-drive size device. [title] Identify the hdmi port in the back or side of your hd tv. 
[step] You should also find whether or not your tv has a usb port for charging the device. If not, it will need an outlet or power strip nearby.