This is the 10331st most frequent Turkish word.
bilgilerinden
"From your/their knowledge" or "from his/her/its knowledge."
The word 'bilgilerinden' is used to indicate possession and source — referring to knowledge belonging to Ali from which learning was derived.
Ali'nin bilgilerinden çok şey öğrendim.
I learned a lot from Ali's knowledge.
Here, 'bilgilerinden' refers to the information contained within the book that was of use to individuals.
Kitaptaki bilgilerinden faydalandık.
We utilized the information in the book.
In this sentence, 'bilgilerinden' denotes the teacher's knowledge that the speaker used to help answer questions in an exam.