There are also tons of tutorials on tv.adobe, Lynda.com and I did one for total training on Dreamweaver CS5, and one for the tv.adobe team on the EDU channel. There are plenty of places to learn. It isn't bad you didn't have a success first time out, you now know where to start at least. We all started as n00bs at one point. Don't hesitate to reach out.
Just some tips. CSS controls all the divs, and the basic look and feel of your content. The code itself will look simple, but the CSS drives everything else. For a glimpse into the power, take a look at an old side called http://csszengarden.com. Click on the links on the side. It is the same CSS, and the same HTML, but each person's interpertation of what the page should look like. Also, make sure you have the developer tools for your favorite browser, and then take some websites, and turn on and off the CSS for the pages. It will be eye opening. Tables shouldn't be used for lay out, because you can't reposition them like you can containers like divs, or other elements in your html. Imagine a 1000 page website, and you want to change the header image throughout. As long as it is a background image, you make the change to 1 place in your CSS and it is changed everywhere. Or text, or if a div is right or left float. I could go on and on.
Anyway, there are also plenty of templates to help you gain that knowledge also. Tons of good stuff to learn out there.
http://www.styleshout.com/css-resources.php
http://www.cssburst.com/ for inspiration
and my favorite, http://css-tricks.com/
