Streaming YouTube on multiple devices is a convenient way to enjoy content wherever you are. To get started, you'll need to link your YouTube account to each device using the activation process. Visit yt.com/activate or yt.be/activate on your computer or mobile browser. Sign in with your Google account if prompted. Next, on your device (such as a smart TV or gaming console), open the YouTube app, navigate to the settings or sign-in screen, and you will see an activation code. Enter this code on the activation website. Once completed, your device will be linked, allowing you to stream YouTube content seamlessly across all your devices.