I think Kevin Powel[1] is worth more than one mention... Although I think Video-Tutorials are usually inferior to text based tutorials regarding the time it takes to learn something, I don't think so in this case... he has mostly awesome stuff and really focuses on the important things.

A lot of my personal collection of CSS tricks[2] are inspired by his videos...

[1] https://www.youtube.com/user/KepowOb [2] https://pilabor.com/blog/2021/03/html-and-css-tricks/