You are running Windows XP (32 bit) and there is nothing you can do to it that will allow it to use all of your RAM. You need Windows 7 or above, 64-bit version, to see all of the RAM. There is a 64-bit version of XP, but it is orphaned now and would be a waste of space to install it.
If you are running some other OS than Windows, it still needs to be a 64-bit OS to see all of your RAM.
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.