What occupations could you learn at a professional level through Youtube?

[needscoffee]

Hmmm…

Are there any skill-based jobs that you could learn exclusively over the internet

For skills based, I mean jobs that you would start to work for a company with basic knowledge and as you work in the field you develop more and more skills under the guidance of more experienced people and professional development classes until at some point you reach the level of a “professional” whatever that means in that field. Fields like: plumbing, electrician, auto mechanic, computer technician, programmer, etc. Today, are there any of those fields that you could start at a basic level …