One example: I don't watch TV, but I love watching late show clips on YouTube. Jimmy Kimmel, Conan, Jimmy Fallon. Their channels are pretty good. They upload portions of the show, and I can quickly gauge by the title if I'm interested. I would have never watched any of this footage if not for their YouTube channels.

Fallon: https://www.youtube.com/user/latenight

Conan: https://www.youtube.com/user/teamcoco

Kimmel: https://www.youtube.com/user/JimmyKimmelLive

I watched Smarter Every Day grow from a small userbase to giant, along with all these other "learning" channels mentioned in the article. These guys are setting up Patreons now and getting paid per video, some of them a lot of money, and so they are really incentivized to produce quality, which is also an interesting recent development.

There is just so much good content on YouTube it's crazy. My daughters love watching How To Cook That (https://www.youtube.com/user/howtocookthat). The fact our children have access to such an enormous amount of interesting content is mind-boggling to me. And it's really only just beginning.

Educational/learning channels that should have been included:

AvE - metal&wood working, amazing tool reviews, hilarious guy - https://www.youtube.com/user/arduinoversusevil

taofledermaus - stuff with mercury, shoots strange projectiles out of a shotgun - https://www.youtube.com/user/taofledermaus

King of Random - lots of interesting random builds, nice quick format - https://www.youtube.com/user/01032010814

Woodworking (&metal) Channels:

Diresta - this guy... makes everything look easy - https://www.youtube.com/user/jimmydiresta

Izzy Swan - woodworker pro who has recently switched to doing YT full time - https://www.youtube.com/user/rusticman1973

I Build It - personal favorite - https://www.youtube.com/channel/UCzGbp-rRVNwyFhn9gHoZr5g

Matthias Wandel - everyone in the community knows this guy, can make anything - https://www.youtube.com/user/Matthiaswandel

Marius Hornberger - similar feel to Matthias - https://www.youtube.com/channel/UCn7lavsPdVGV0qmEEBT6NyA

AWE Me - pros making amazing weapons, nice quick format - https://www.youtube.com/user/AweMeChannel

Alain Vaillancourt - check out his workshop build - https://www.youtube.com/user/lgosseuxdbois

Shop Time/Peter Brown - does crazy projects - https://www.youtube.com/user/kludge1977

Make - maker channel, features lots of guys from other popular channels making stuff, and their own stuff - https://www.youtube.com/user/makemagazine

Slingshot Channel/Joerg Sprave - makes all kinds of crazy gadgets with wood - https://www.youtube.com/user/JoergSprave

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Anyway, that is more than enough to get started (I have a couple dozen more). I didn't find all these guys at once, they will mention each other, and provide links in the description.