I installed WordPress thru Fantastico in my cpanel and everything was easy and now looks fine. I deleted the welcome post, created some categories and uploaded a few posts. The next day WordPress had deleted all my stuff and rest itself to the welcome.
So I did the new stuff all over again - next day it was all gone again.
I can't find any setting to automatically update itself. It must be some basic stuff - please help me before I lose the rest of my hair!