Man pages are OK when you're first learning how to use something; but if you're already familiar with a command and just need to remind yourself of a the specific sequence of options to achieve a desired result, they're not the most convenient.
I think it's useful to have a tool that fulfills the latter purpose without worrying about the former.
The FreeBSD, TrueOS, and related worlds put the "using" doco into what are often called "handbooks" or "guides".
* NetBSD Guide: https://netbsd.org/docs/guide/en/
* FreeBSD Handbook: https://freebsd.org/doc/handbook/book.html
* DragonFlyBSD Handbook: https://www.dragonflybsd.org/docs/handbook/
* TrueOS User Guide: https://www.trueos.org/handbook/trueos.html
* PC-BSD User Guide: http://web.pcbsd.org/doc-archive/10.1.2/html/pcbsd.html (viewable off-line directly in both PDF and HTML forms in /usr/local/share/pcbsd/doc/)
Some parts of the Linux world do the same. upstart had the Upstart Cookbook for example:
* http://upstart.ubuntu.com/cookbook/
The Linux Documentation Project was supposed to contain a wealth of this stuff, but large parts of it are seemingly moribund, and incomplete after decades or woefully outdated. Wikibooks tried to take up the slack with an "anyone can edit" Guide to Unix and a Linux Guide:
* https://en.wikibooks.org/wiki/Guide_to_Unix
* https://en.wikibooks.org/wiki/Linux_Guide
If you want examples and doco that works from the basis of what you usually want to do, then these handbooks and guides are the places to go, not reference manuals.
User-submitted and voted-upon examples for commands.
(hadn't seen tldr, looks great, I'll check it out)