The research is just one of the fascinating parts of writing. As part of the research on a post-apocalyptic science fiction story, I've begun collecting resources on how survivors could re-spark human civilization after a catastrophe nearly wipes us out.
Project Gutenberg (gutenberg)
Internet Archive (archive)
How To Setup Your Own Copy of Wikipedia (extremetech)
Wikimedia Downloads (wikimedia)
MediaWiki Import Script (wikimedia)
Survivor Library (survivorlibrary)