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As for software, OneNote is a fantastic writing program that automatically backs up your writing to onedrive. It has a structure that let's you store lots of information in whatever way to choose, basically it's modeled after divided notebooks and provides digital sections and pages in a very intuitive manner. It isn't a word processor, so you'd need to export to something like word, but if you want something that's an all in one program, check into scrivener.