Like Chrissy, I mostly use YouTube to learn how to do things, like auto repair or jewelry-making.
While stuck in a hotel room due to heavy rain in Colorado last week, I got re-addicted to the History channel. Since I don't watch television, since I got home, I have been watching episodes on YT.
I have been trying to teach myself how to make wire-wrap jewelry. YT has a ton of videos for that. But far beyond just wrapping polished stones, there is one artist who just amazes me with her work. She makes all kinds of things from wire and beads. I am studying her miniature high-heeled shoes. They can be used for a dollhouse or as a necklace pendant. I have failed three times so far, but not giving up. Her channel is full of wonderful creations. And she does not sell them, she collects them.