For lighter reading on the Khazars, I suggest Milorad Pavic’s “Dictionary of the Khazars: A Lexicon Novel” - either the male or the female version - one paragraph is critically different.
On the periphery of the Khazars: Milorad Pavic’s “Landscape Painted with Tea”.
What’s the difference?? You can post privately to me if you don’t want to spoil it for somebody.