The /usr/share/doc directory is another excellent place to look for help in Linux. This directory has very intensive documentation; it doesn't just show you how to use a command; sometimes, it will even show the name and contact information of the authors who developed the command. Moreover, it may also include a TODO file that contains a list of unfinished tasks/features; contributors usually check the TODO files to help fix bugs and develop new features.
To demonstrate, let's go to the nano documentation directory:
elliot@ubuntu-linux:~$ cd /usr/share/doc/nano
elliot@ubuntu-linux:/usr/share/doc/nano$ pwd
/usr/share/doc/nano
Now list the contents of the directory to see what's inside:
elliot@ubuntu-linux:/usr/share/doc/nano$ ls
AUTHORS copyright faq.html nano.html README TODO
changelog.Debian.gz examples IMPROVEMENTS.gz NEWS.gz THANKS.gz
Cool! You can view the AUTHORS file to see the team of developers who contributed...