Evernote is a perfect way for a study driver, and for what you want to do. I have been saving in Word format some essays and docs of Ph.D. importance for already a year. I work on https://studydriver.com/the-yellow-wallpaper/ and, therefore, I have frequently to work with Evernote. So you have to entrust it to keep your documents because it is safe, and is out of documents' danger of disappearance.