Welcome to the server! If you haven’t visited the forum sticky yet, I really recommend it.
https://us.forums.blizzard.com/en/wow/t/wra-information-directories/651240/7
And here’s some general server discords with sections for events…
https://discord.gg/f9DvTJx8
https://discord.gg/Vzumr6FV
https://discord.gg/D7dTj66Y
And a tumblr blog that regularly updates with events…
https://wowrpevents.tumblr.com/
All worth a look!