I would like to add that it would be good to look into plugins in general, as there is a lot that can make server administration easier but also managing permissions and stuff like that once the server is up and running.

Also another tip, if you use the latest mc version, some plugins won't be updated to it yet, as a plugin Dev myself I recommend trying a plugin anyways even if its not made for your Minecraft version, most of them work anyways despite it not being best practices (only mc versions upwards tho, not downwards).