Facebook videos are often in YouTube. If you are looking at Facebook and something is of interest, search for it in YouTube. It is easy to copy a URL (web address) and email it to a friend.
TED talks are often in YouTub, especially those not part of a major TED talk line of development, such as this one by Dr. Alan Watkins on lowering one's excitement level.
YouTube has channels to which you can subscribe. Subscriptions mean that new videos on that channel will be made known to you when you sign into YouTube using a Gmail logon name and password. You can subscribe to my channel (#9 below) but it will be a complete waste of your time.
Some YouTubes of interest
music especially classical many pieces of music are on YouTube I suggest anything of interest
I like Bruce Tuckwell and Jeremiah Clarke the trumpet voluntary the Prince of Denmark March
Just about anything concerning repairs of just about anything
Yoga and all sorts of exercise
Movies such as "Foul Play" with Goldie Hawn and Chevy Chase
Monty Python
Billy Collins , text here of What She Said (YouTube hard to hear)
Music Man - example of Pick a little, Talk a little scene
Cole Porter's "Miss Otis Regrets She's Unable to Lunch Today" by the heavenly Ella Fitzgerald
Just for fun, think of three subjects, people, music or movies you are interested in. Could be a subject, a person and some music. Look them up in the YouTube search and see what you get.