Any good mangas for starters?

You need both a name and a face to kill with the Death Note. Light knows what L looks like, but no one knows his true name. As for the Shinigami eyes, Light taking a picture of L would be very, very suspicious.

L made it a point in their investigation to keep his identity a secret to all members, so having Light take a photo of L would immediately place suspicion on him.

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.