Where in Bahrain can I find a bookshop that does buy&sell of second-hand books?

There are still quite a few second hand book shops in Amsterdam, but all of them are smaller than de Slegte used to be and most of them are specialized. One that has quite a wide range is: https://www.scheltema.nl/nl/tweedehands But if you google on 'tweedehands boeken Amsterdam' you will find quite a few sellers, at least half of them also talks about buying in the small bit of the results page.

Or ask someone from the nearest public library.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.