I know you’re on A52, but if you’re not overly attached to being in that realm, I can recommend a guild on another server that would probably fit with what you’re looking for. On Dalaran, there’s a guild called Pensive that has both a Horde and Alliance guild, there’s always people online, and they’re a very friendly, helpful guild, especially towards new players.
You can post in that thread and they’ll answer any questions you have.