8. Online User's Manuals
Some of the major Linux distributions, Window Managers and Desktop
Environments publish their user's manual online. If the entire manual is
not online, installation and configuration guides are typically found at
the relevant website. This also applies to major applications like the
Gimp (GNU Image Manipulation Program) or
Apache.
So, for those users who do not have the printed manual, a wealth of
installation and configuration guidance is generally available online.