So I've just installed Ubuntu Server 20 as the primary OS

As I’m letting it update, thought I’d would jump on here for some suggestions for what’s next. I know enough to know that I don’t know enough, so any help would be appreciated. Like what should I focus on first, best practices, and what not to do.

This looks like a support request.

This site is for the co-ordination of the Ubuntu project(s), and other non-support matters. For Ubuntu Support options, please have a look at https://community.ubuntu.com/t/finding-help/709

Otherwise you could try a search engine, or sites like https://ubuntu.com/tutorials

My bad, wasn’t looking for support. But now that I’m read it, I see how it sounds like that. Thanks for pointing it out.