A couple of things to note. The file manager, Nautilus, has been dumbed
down in recent months and it is hard for many established users to use. It
has gone so minimalistic as to make it useless for many users. Linux Mint
has decided to fork it because it is so terrible.
www.omgubuntu.co.uk/.../linux-mint-explain-nautilus-fork-call-new-ver\
sion-a-catastrophe

The second thing is that files in Linux are case sensitive so you need to
know the exact name. myfile.nfo is a different file from Myfile.nfo. That
can give you fits till you get used to it. Windows style wild cards work in
Linux, too.

See:http://www.linfo.org/wildcard.html

Another thing that be troublesome for noobs is permissions. Linux will not
let you access a file belonging to someone else. If you move a file as root
then root has ownership and not the user, so you need to change permissions
as root to to the user to get access to it. Finally there is the issue of
hidden files. A file can be hidden by adding a dot before the file name and
if it is hidden then you need to turn that function on in Nautilus first
(Ctrl+H). This is mostly the case for settings files. Since I do not know
if it is a setting file or not I am including that tid bit.

BTW the file folder at the top of the Launcher also opens Nautilus. You can
also search for files using the scopes at the side when you click on Dash
and lenses in the middle and bottom. They act as sources for information
and filters. For example you could have a Flickr scope and lenses for
various types of pictures. Unity can be confusing at first, but it is
very customizable and very powerful. People underestimate it.

Lenses and scopes are explained here:
developer.ubuntu.com/.../

Also see:
askubuntu.com/.../what-lenses-for-unity-are-available