To get into the Library you will have to find the secret entrance in the Britan Library in Faraan.
This is a regular undead dungeon with a few custom monsters that can give some recipes.
|An Evil Librarian||An Assistant Librarian||A Library Archivist||The Library Director|
|Runebook Library Bookcase||Straps Backpack||Bloody Backpack||Furry Backpack|
This dungeon also has a Stealable item inside. 3 to be exact.
|Rune Library Construction Guide|