2) It will only affect the internal representation. Nothing that you will notice on the outside.
2) You can mix database types. I.e. InnoDB and MyISAM.
3) innoDB supposedly keeps data safer. I think it is the default on latest versions of mySQL.
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.