App_Code is necessary in Web Site projects because it has a special meaning. It means "Don't serve these files to a web browser". In ASP.NET MVC, files are not directly served to the browser in most cases, so App_Code is not necessary.
You can place code files whereever you want, in any folder you want.
Well, try to download some already existing opensource projects. One of them is rather complex, but very cool if you'll get understanding of it - orchard.
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.