It's worth noting that there's a difference between reference documentation and tutorials. The world needs both, of course. The user manual on Unices and Linu

It's worth noting that there's a difference between reference documentation and tutorials. The world needs both, of course. The user manual on Unices and Linux operating systems is meant to be reference doco. In the BSD world, in addition to the user manuals there are the various handbooks and guides: * https://freebsd.org/doc/handbook/ https://freebsd.org/doc/handbook/ * https://netbsd.org/docs/guide/en/ https://netbsd.org/docs/guide/en/ * https://www.trueos.org/handbook/trueos.html https://www.trueos.org/handbook/trueos.html * http://dragonflybsd.org/docs/handbook/ http://dragonflybsd.org/docs/handbook/ The Linux world has the Linux Documentation Project, but that is of variable quality, has patchy coverage, and is wildly outdated in some areas. There's a collaborative project on Wikibooks, as well. * https://en.wikibooks.org/wiki/Guide_to_Unix https://en.wikibooks.org/wiki/Guide_to_Unix