Look at your unidentified items => they show the id lvl you need. Did youo put skill pts into this skill? You must have had a book from the Torture master (Fergus). This one has a lvl cap 2 => so, items with a higher skill lvl are not identified.
Find book => look UNDER the haystack in the left arena cell (where the spiders were) you can see a small piece sticking out. Try zooming.
Kill rats => Cook Bryant gave this quest? If so, look for imp Rashax, SW room a bit across the corridor. If you agree to help him => look into your inventory => there is a key now. Just go to the storage room, east of the kitchen and open the locked door.
Lockpick => skill is broken, don't waste your skill pts until a patch says otherwise.
