Nice, I was recently called as a ward technology specialist as well!
You should have access to manage events at
Meet.ChurchofJesusChrist.org. If you create a Zoom webinar in your Church-provided Zoom account, it will show up here, and you can toggle whether it should be visible for signed-in ward members at
Broadcast.ChurchofJesusChrist.org.
Also, you should have access to manage sacrament meeting hymns, elders quorum lessons, and Relief Society lessons in Gospel Library. The intent is so you can help other leaders learn how to use those features (ideally you shouldn't be editing them yourself unless there's a need). See
Gospel Library Overview Videos,
Gospel Library FAQ, and the Help section in the Gospel Library app.
I'm not sure if there's anything else.