I grew up in two words—the web design / development world where I wrote HTML, CSS and now JSX, and the graphic design world where I mastered H&J's in Quark (yes, I said Quark).
I've now shifted nearly all of my work online but find that the design elements shouldn't change just because they've shifting to pixels rather than paper.
In 2020, it's crucial to understand how to code, especially as a designer, and more so to learn how to design through coding.
Before making Udemy videos, I was a instructor at Academy of Art University in San Francisco where I taught web design and development for over 13 years. Also during that time, I launched 3 iPhone/iPad Android apps and had the best-downloaded app in the University's history.