To be honest I only used Windows and Ubuntu so far. I also heard about many other linux systems being free, irritated me a little. And yes Ubuntu is very easy to understand only thing is that it has the "close window" x-button on the wrong side ;).

Thanks for the clarificaton, buddy! I thought there must be more to the OS. Ubuntu itself means much more than I managed to tell, but I only know about the movement since very recently.