So this is your first tip for an all new admin ?
Just out of curiosity, what would be your second advice??
-Use full friendly URL's on
-Creating and installing a FAVICON and other related images to set up your PWA
-Some kind of daily or twice daily automated backup routine that gets the data off site from the host (SQL db, and general files too)
-Leaving HOME PAGE URL field blank, to get rid of the redundant "HOME" button on top left of navigation
-Playing with screen width, logos, maybe add a third party banner system if you wish to sell banners or use it for holiday art (we use Siropu)
-Finding some reliable add-ons to add the features you may want that arent part of the basic package. XF2 has a great selection that has about 300 included for $35 per year. I use about a dozen of those on my forums, and some from other authors as well.
-Going through EVERY option to see what it does, and consulting the documentation
-Setting your email server up correctly with spf, dmarc, dkim, encryption, etc so you have excellent mail deliverability. There are free tools to score it, too. Set up accounts with the various providers integrated with the software to get API keys, so the forum will automated much of the screening of new folks.
Welcome!!!!