:? With Tonsil Stone in your inventory, head to the Ancient Church in Cathedral Ward and enter it. You will be transported to the 1st floor of the Lecture Building. Alternatively, you can also get here without the Tonsil Stone, but only much later in the game, from Lecture Building 2F.

Lecture Building 1st Floor lamp

NPC door

📜

Lecture Theatre Key

Student Set

Madman's Knowledge

Madman's Knowledge

Red Jelly×2

Augur of Ebrietas