You need 8GB or ram at least, if your mother board can't handle it, upgrade that first, make sure it supports your old processor. If you got extra 200-300 get a new processors, I recommend any i7, preferably the Devils cannon model. And for graphic card GeForce GTX 970, best for that price range.
All that would only cost you 600-700 Update: I Highly recommenced a new mother board and processor for you, just realized you have a first gen model, currently its at 4th-5th gen. Here is my recommendation: http://pcpartpicker.com/p/DVpzRB Look for deals to make it cheaper. Use https://pcpartpicker.com/ to help you choose compatible parts, with your mother board or processor if you want to keep it same, and even if you want to get a new one, select i7 processor first then choose.
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.