How do I make X threads?
CSS Zen Garden + firebug. Read this NOW.
Step 1: Download Firefox.
Step 2: Download and install the add-on Firebug. This one is very important. Learn how to use this tool well. Get acquainted with the element inspector. This will let you highlight anything on a web page and see the HTML and CSS used to make it happen. This is extremely important, because this is how I learned to make web sites.
An extremely useful tool: Visit CSS Zen Garden. This web site was built around the concept of taking a page of HTML markup and displaying it in very unique ways using CSS. There are SO MANY different layouts using the EXACT same HTML. Not only is this totally awesome for the vast number of techniques you can learn, but you can download each example and see what files go into making that web site happen.
When you first visit the site, you'll see the basic design. On the right is a sidebar with more designs. Click "next" link to see more. As you visit each site, you'll see that it has the exact same markup displayed differently. Let's say you chose the design The Lonely Flower. If you like this site and what to see the CSS that goes with it, there's a link on each page called "View this Design's CSS."
The base HTML and CSS file should be on there as well. Look for "Download the sample HTML file and CSS file."
I can not emphasize how important it is for you to be able to learn how to pick apart another person's web site and learn how to do things. Even if you consider yourself to be a master, there will always be something new to learn. This tool is also awesome for seeing what's wrong with your own web site. You can also use Firebug to design inside the browser, which is something I'm doing more and more these days