I’m not sure who you’re asking, Jane.
There is quite a bit about how to be a discourse admin in the documentation category here, for more on categories I’d suggest starting with Create a category in Discourse
In all honesty, I think the best way to learn your way around the admin features is to experiment with them, but then I’m a programmer/analyst/engineer by training so that’s kind of what I’ve been doing for close to 50 years.