Facebook Watch is a new streaming service that was announced by Facebook on August 29, 2018. It is a live streaming service that allows users to watch videos and photos from their Facebook account on their Roku devices. The service is available in English and Spanish. To use Facebook Watch, you first need to create an account on the website. Once you have an account, you can sign in with your Facebook credentials. Then, you can add your Roku device to your account and start watching videos and photos from your Facebook account. To watch videos and photos from your Facebook account on a Roku device, first open the Netflix app on your Roku device and sign in with your Netflix credentials. Then, open the Hulu app on your Roku device and sign in with your Hulu credentials. Finally, open the Facebook Watch app on your Roku device and sign in with your Facebook credentials.