Yes all wifi devices are interchangeable. Anything that has a wifi antenna (receiver) will pickup and connect to a wifi routers (sender) and as for free wireless? If you live in a neighborhood where the houses are really close to each other, you could buy a router like a linksys wrt54g and install ddwrt on it and use it to extend your neighbors unencrypted wifi to your house and then plug it into anything you want having internet... goodluck!
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.