A view becomes modal when it is displayed using presentModalViewController:animated. You can pass along the model to be edited before presenting the modal view.
Some answers, from my knowledge of views/data. I've no experience yet with CoreData so won't answer that part.
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.