Ask HN: I'm a senior back end dev, what's the best way to learn front end?

So yeah, 8 years of experience as a developer and yet I know nothing of the current front end stack, aside from the bases of CSS and HTML that I learned really long ago. React, vue, SCSS, webpack... nothing.

What would be the best path to learn front end development so I can transition to full stack? I know it's a field that tends to change constantly, so I'd hopefully want updated resources.

I must say that my goal is for my skills to be marketable, so the more mainstream the approach the better.