Solution

from the yellow goblins s till you can't go any further,e,again s until you're

in the abbey,somewhere in the west and south is a labyrinth,search around till

you find a secret library{not really search but go around},you'll find a door

which doesn't open,'press the fourth and seventh above',s till you find an old man,

kill him, get the book from his corpse,return to the abbey and search the master,

give him the book