Install the Firebug https://getfirebug.com/, a Firefox plugin, which displays on the bottom of the page, the html format of the element over which the cursor is hold.
One way to solve this problem, is to directly install a desktop package by using the command line.
sudo apt-get install ubuntu-desktop
This can also go well, but by experience, most of the time, it is better to work within an interface for system administration for Unix. This interface can be provided by Webmin, which is web-based. How to prepare the system and install webmin can be found here: http://www.webmin.com/