To locate Stage 1, you must stand in the study carrels area and look for a clue that will lead you to the final cache coordinates. The clue is a symbol, one that is familiar to all who play this game. The symbol will suggest a location nearby to receive the coordinates to the final.
The location of the nearby final will leave you very exposed to muggles, at least during 9-5 work hours. Please use stealth and avoid disturbing or disrupting the people and work that goes on here.
The campus is open most of the week from September to May, including late into the evenings (although not overnight or on all weekends). During summer months, the building may be closed after 5 pm. If you happen to see me during your search, please stop in and say hi!