YouTube TV is a streaming service that lets you watch live and on-demand TV from major broadcast networks, including ABC, CBS, FOX, NBC, and Telemundo. You can also add Showtime for an additional monthly fee. The service is available on a variety of devices, including computers, mobile devices, and streaming players. To watch YouTube TV on your computer, you'll need to install the YouTube TV app. The app is available for Windows and MacOS. To watch YouTube TV on your mobile device, you'll need to install the YouTube TV app. The app is available for Android and iOS. To watch YouTube TV on a streaming player, you'll need to install the YouTube TV app. The app is available for Amazon Fire TV, Apple TV, Chromecast, Roku, and Xbox One.