If this is your first encounter with Tristia Tresunus, please go to the Prima Porta VRomana so you can meet him properly before starting on his journey through Rome.
From there I am led with unlimping pace
up the steep stairs to the lofty, gleaming white
temple of Apollo, the unshorn god.
This itinerary shows you the route. Follow Tristia Tresunus to his next stop by retracing your steps through the Pronaos and the Scalae Templi to the Temple of Palatine Apollo; then walk through the Porticus and the Bibliotheca Colonnade to the Palatine Library; you will see the exits after you click on view room in web frame.