running a data base

hi ya,

I am very very new to this so please bear with me. Just started my first blog and I before i publish my fist post need to clarify the data base issue. How do i go about setting one up.
my blog is self hosted via wordpress. My theme is provided via elegant themes. my webhost offers me unlimted mySQL databases.
so with all that how exactly am I setting up the databases which I hope will hold subscribers info etc?
Thank you
recipesf