What about player to player quests?
The ones, wanting to become mentors activate it. When a new player arrives, the closests are informed, and the first to take it could give the newcomer some easy quest, explaining it well. In these cases the reward could be given by the system.
So this could give the new ones a connection with the PS world.
(I was also thinking how to suggest expanding the P to P quests, but this is not that topic)