A Chromebook is a computer that runs the Chrome OS (operating system). It can be thought of as an Internet computer, that is mostly a browser, although most can now make use of Android apps as well.
Chromebook for Beginners:
Learn what makes a Chromebook unique.
How to get and use applications,
manage files and
choose your settings.
Files stored on a Chromebook – using Files app
External storage on a Chromebook