There are two popular forms of media today. Printed media, and on-screen media. And when it comes to documents, you can create them to print, and you can create them for online or on-screen viewing— or both.
eBooks (Electronic Books) are a great modern communication platform to create articles, publications, manuals, guidebooks - and more. What's best (and defines modern) is that they are created for online use and can be created in a variety of ways, making them useful on a variety of online platforms.