Switching and getting your templates is really easy! What you have to do is go to your style editor in your admin panel. After that, you will see "choose templates" option.
Click that and you will get to see all kinds of templates available right now. Choose one of them and it will automatically save it for you. Go back to your site to check if your template has been changed.
If you want to know how to do all these steps by viewing a screenshot, here is the link to the tutorial: manual.squarespace.com/introduction/swit.... You can also make your own custom template but since it is really hard for a beginner to do, I just recommend you to go with one of those templates available in the list.
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.