youtube leaves a lot to be desired from a quality stand point.
If I want windsurfing, snowboarding or skateboarding tips the quality can be excellent.
There are some great SEO channels and stuff for CSS Grid.
Even with my son, we can get short lectures on the stuff he is studying at school.
Sort of like Facebook, Dropbox, Salesforce, Instagram, Google, etc. None of them were first. Being first is dangerous.