Hi all! Returning player that left nigh a decade ago, so might as well just say I'm new.

I've seen a couple references in guides about how I should "leech abyssea" when I hit 30 to level. But I can't find many details on what this is. I can find guides to unlocking it, but not a lot on what to actually do there.

Can someone please explain what it is that we actually do in Abyssea? (Does the 'leeching' like... literally mean letting other people do the work? o.o)