The LUGBZ freely provides the two excellent GNU/Linux Starter Guides by our member Andrea Congiu written in Italian. The two works, released under CC-BY-SA, are not limited to one particular distribution, but cover both Mint and Fedora. Since Mint is Debian- and Fedora Red Hat-based, much of the content applies to other distros as well: Ubuntu, KUbuntu, XUbuntu, LUbuntu, Debian (all Debian-based), Red Hat Enterprise Linux etc.
The download links to the PDFs:
Notice: The manuals get updated on a regular basis, so please re-check for updates. For enhancements and errata please contact Andrea Congiu over the LUGBZ’s email address email@example.com. On request he also leans hard-copy editions of them.