It's just a general system setup and config tool. I'm assuming that, like me, you already know how to do all that stuff without yast but it's good for newbies and people that aren't super nerds. With all of the anti terminal stuff I always read about on the internet you'd think at least ubuntu would have their own version of it or something similar.
"YaST is a SUSE Linux Enterprise Server tool that provides a graphical interface for all essential installation and system configuration tasks. Whether you need to update packages, configure a printer, modify firewall settings, set up an FTP server, or partition a hard disk—you can do it using YaST."
But yeah, I actually hardly ever use it myself.
This year I discovered Norm Macdonald and I think he's now my favourite.
Theo Vonn is also hilarious, not so much his stand up but in podcasts and general conversation.
Bill Burr is great too.