Could be anything, as long as it won't require me to remember many details as I only read a few minutes to fall asleep.
If possible it shouldn't be too exciting to the point of not letting me sleep too.
I read the Cemetery of the Forgotten Books series, and the 1st one gave me that feeling, but the other 3 on the series I did not enjoy that much, I just pressed on because I loved the 1st so much.
by seeilaah