Please read the posts properly
clearly stated how to unpack the files and install it.
If you use Debian, you can install it by:
apt-get install nano
Google is your friend.
Off topic: to be honest, if you don't know how to untar a TAR archive, I recommend that you ask somebody to manager the server for you. You probably can't do much with the server unless you have some sort of graphical interface to help you, you might what to look at Webmin
, which is a graphical system administration tool.