Originally Posted by espressoguy
So out of the three I have looked at Ubuntu, Fedora, Linux Mint....not knowing anything other than they have similar windows GUI.
Nope they haven't. The default desktop environments are Unity (Ubuntu), Gnome Shell (Fedora) and Cinnamon (Mint). All of them are based on Gnome 3 but behave and look different than their counterparts. Besides that, any of those distributions can be installed with almost any desktop environment/window manager out there.
Then, where is a good place to start reading/learning on this site. I want basics then basic I, etc.
Depends on what you mean with basics. If it is how just to use the desktop environments their should be plenty of beginner guides on the net, if you want to get more under the hood you should learn the basic commands (http://linuxcommand.org/index.php
) and the administration tools of your distro, for example apt-get (Ubuntu/Mint) or yum (Fedora) to manage your software installations.
If you want to learn about specific tasks, like file-servers, mail-servers, ..., there are also plenty of how-tos on the net, or you just ask here if you can't find anything.
For getting the best advice on this (and other) forums I would recommend to read the How To Ask Questions The Smart Way
article (link in my signature).