It is a 64 bit version though if you are not having over 3GB of RAM I don't recommend you to get Windows on 64Bit, if you DO have more than 4GB of ram I sure would advise you to choose the 64 bit version.
It will run both the 32 bit version and 64 bit.
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.