Is there any site in which we can download any book free books on a paticular sub by a?

I don't know if it is what you are looking for but Project Gutenberg contains over 30,000 free ebooks that were previously published on paper. You can check it out below.

Try Google Books at books.google.com . They have thousands of books, magazines,newspapers and other periodicals available for completely free. Being that it is Google, their search feature should make it pretty easy to find what you are looking for.

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.