There’s not much to do really. On the web, you’ll see a little pencil icon near the community name, which lets you change things (ex. Sidebar text, images, settings).
It’s up to you how you want to do things. I’d recommend adding a description to the sidebar for what you want to see in the community, and any relevant rules. People in your community will need to follow those rules, as well as the rules for the lemmy.world instance (ex. Think local laws vs. national laws), so you don’t need to cover everything.
No shame in copying rules from other places, such as the Reddit equivalent, when you’re not sure.
Day to day, you’ll see reported content in the mod page (little shield icon up top) and if you want to remove a post you need to open the comments and then find the button for it.
@xylinna I’m happy to help out while the community is cleaned up again (if you guys want more help), but I probably won’t stick around since I think Jimbabwe can handle it :)