L3 books in Nephilim Fort

[marthos]

Just started playing A1, and cleared out the Nephilim Fort.   There are two books on the upper floor that I think are supposed to teach Heal and Firebolt.  Each time that I use them, I either get poisoned or it says that I can't understand them.   My party has a total of 8 AL.  Digging through some other posts, I should only need 3 AL to read these.

 

Can someone help me figure out what I'm missing?

 

Thanks

[Randomizer]

Okay I looked at the massive list and on the upper level you should need only AL 3:

 

The Minor Heal book is behind a hidden switch and magical barrier in the northeast.

Spell book that poisons party is northwest room.

Bolt of Fire is in Zemera's bedroom in east.

 

I don't know why you can't read the other two.

[marthos]

Ah, thanks!!

 

I'm reading the wrong books it looks like.