Moonglade

All druids are welcomed to the sacred lands of Moonglade. Keeper Remulos--Moonglade's guardian--keeps watch over all druids who hibernate there. I'll teach you the spell that lets you transport yourself there. Cast it whenever you seek Moonglade's knowledge or solace.

As for your first lesson here on Azeroth, travel to Moonglade and speak with Dendrite Starblaze in Nighthaven about the path you're now on. Good luck, young adventurer.