Ok so far I think that I have followed the installation instructions completely - they were a very difficult and time consuming (for me).
I am a very advanced "computer operator", but behind the scenes stuff frustrates me to no end!
ANYWAY, I was on the last step of installation: I entered mydomain.com/blog/wordpress/wp-admin/install.php. I was then assigned a username and random password.
That's where it stops (I read I was supposed to get an email with the password, I did not), but I wrote password down anyway. Then I try to go to wp-login.php in next step and get the message: __('Already Installed').'
'.__('You appear to have already installed WordPress. To reinstall please clear your old database tables first.').'
NOW I AM TOTALLY LOST, PLEASE HELP!