What is a one-sentence summary of the following article?
If you're not automatically logged in, enter your email address and password. It is at the top of the screen. Add information to help find the types of videos you're looking for. If you're looking for videos of a specific person, type in the person's name. For a specific subject, type the subject -- sharks, for example -- into the search bar. It's the blue button in the lower right of the screen. It's a tab near the top of the Facebook window. This will display a list of videos based on your search.

Summary:
Open the Facebook app. Tap the search bar. Type in search terms. Tap Search. Tap Videos.