es·o·ter·ic
adjective \ˌe-sə-ˈter-ik, -ˈte-rik\

: only taught to or understood by members of a special group : hard to understand

: limited to a small number of people


oops, it's not a "small group" anymore

the fact that you have these "books" etc proves that they are not "esoteric"

to be honest you should change your title to

EXOTERIC Books Library and other common knowledge resources