Delete stuff you don't need. If there are things you want to keep but haven't used in a while (old pictures, old schoolwork, etc) you can hold down CTRL and left click all of them then right click and choose "Send to compressed (zipped) folder". Once in a .
Zip folder, you can still have them on your computer, but you can't use them without extracting them from the folder and they take up a lot less space.
Use the CCleaner to delete useless stuff. Also empty the Recycle Bin. Check for stuff that uses up too much space, and see if you can delete them.
If there's stuff that you don't use, try compressing them. Even though I can understand that you don't want to buy storage, if you really do use all the space, then you should buy an external HDD or something. There you could save what you don't use, so that you don't have to be plugging it all the time.
You could also change the HDD for a new one with more space.
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.