make a folder called joomla and unpack all there.
go to http://localhost/phpmyadmin and create the database "joomla" or "pannekaker" or whatever
go to http://localhost/joomla and do the stuff follow the steps etc etc.
when you get to the database configuration page you enter
localhost
root
password
joomla or pannekaker or whatever
Joomla will populate the database for you with the install script (the part we did manually before)
select the "install example data" option that will make it easier to check out the possibilities.
Your admin userid will be "admin" when you are finished
You don't need to, but I think it is easier to have a folder.
Remember when you create users to pick the tiny_mc editor or something. It makes editing the posts easier. Good job