So I got into the game about a week ago and a buddy of mine just got it last night. So this morning I told him we'd party up when I got home and do some stuff.

It's occurring to me now that I don't know what that stuff would be. Much of the main story and class quests seem to be solo instances which I assume I can't help with. He hasn't unlocked any dungeons yet so I can't help him there. Is there anything we can do besides grind fates? If he takes a guildleve for instance, won't I be locked out of it?