There are thousands of guys out there who are working with Joomla.
I wanted to learn Joomla. So I set up Joomla on a domain. Read a tutorial for 6 hours and went about setting up the site.
The Joomla default setup gives the a few sample articles, menus, themes etc. which is user is free to modify and experiment.
I deleted the default Joomla articles, menus etc. to set up my own and now it looks like the thing has crashed. Its giving me a 404 for a component that is not found. I have to re-install the thing now