This post goes for all the book lovers out there! Here is a short list of books about Istanbul. The list is not a definite since there are many many books written about this city.
Orhan Pamuk: Istanbul: Memories and the City
The obvious, Pamuk's book about Istanbul and his childhood memories. It's one of my favourite books of Pamuk and I would certainly recommend it to you after your visit in Istanbul. You can also read it before, but if you are totally unfamiliar with the Turkish history and Istanbul, it might be a bit difficult to read it. An absolute must for all of you who would like to know how Istanbul looked liked twenty, thirty, forty (...) years ago. Nostalgic descriptions of old Istanbul.