The esoteric books, while not a complete waste of time, seem designed to tie up the time of people that could be more productively used somewhere else.
I checked out at all the god names, I mean, who really cares?
They do show what the 'elites' of a long time ago were thinking as they set up the world we live in today.

The others are pretty straight forward.
The only way to know what is in them is to read them.
You will have to separate your own wheat from the chaff.
As do we all.
Or, remain one that doesn't know.
Up to you.