The closest to Kings Cross is the one in Islington, You will still need to catch a bus tube to get there. Take the tube from Kings X to Angel, the walk to Islington Green. There is a map on the STA travel website.
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.