No dw means define the single word 512. That means allocate space for one word here and set the value to 512.
As @paxdiablo already pointed out, the number is just the value for the word. When/if you want to define an array of 512 words like you described, you'd use something like.
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.