> While these Udemy is fine for building up CV bullet point skills, I have never felt that these tutorial based job training courses, designed to teach you framework N+1 were as useful as more fundamentaly and in depth courses that lead you to understand how things really work.

That's what Udemy was from the start. If you want depth, it was always Coursera.

https://www.coursera.org/browse/physical-science-and-enginee...