i'm completely new to design, never really done much other than read a few of the html/css tutorials on w3schools and read halfway through a few books. It (css) is something i've been meaning to learn for some time....

with that in mind what's involved in making a wordpress blog design exactly match my main site (an ecommerce platform). i want the user to be able to click on my "blog" link in the navigation and not even know that they're moving back and forth between two separate sites.

Is this something a first timer could do? if so, how would i go about it? I'm thinking it would be fairly easy since i'd already have all the css for the main site.

not even sure where to start...