General categories:
* Newspapers
* Magazines
* Articles
* Essays
* Poems
* Plays
* Scripts
* Letters
* Emails
* Text messages
* Social media posts
* Online content (blogs, websites, articles)
* Instructions
* Maps
* Signs
* Menus
* Receipts
* Labels
* Packaging
Specific examples:
* Recipes
* Lyrics
* Scripts
* Instructions for assembling furniture
* Travel brochures
* Movie reviews
* Product descriptions
* Reviews on Amazon or Yelp
* Scientific papers
* Legal documents
* Financial statements
* Academic journals
* Research papers
* Comic books
* Graphic novels
* Manga
* Fanfiction
* Screenplays
* Librettos
* Speeches
Digital content:
* Websites
* Blogs
* Social media posts
* Emails
* Text messages
* Instant messages
* Online forums
* Chat conversations
* E-books
* Audiobooks
* PDFs
* Documents
This list is by no means exhaustive, as people read a wide variety of things throughout their day.