What external hard drive should I get? (500GB, 1TB, or 2TB)?

There's not a huge difference in price. You're looking at around $25 more for a 2TB external HDD vs a 1TB. $25 for another TB is pretty cheap, and you'll have plenty of storage space.

I'd say the 2TB drive would be the most cost effective option.

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.