Learning CSS the hard way

I was getting kind of bored today and didn't really have anything to post so what I decided to do was edit my blog's template. The only problem was I have little HTML/CSS knowledge. My HTML knowledge is limited to form tag which I needed to pass to PHP scripts. But I decided it was the time to learn something new so I got down to editing it little by little. The end result : Im a little more satisfied now especially since I got the content thing wider than before(which took a lot of effort btw until I figured out the outer wrapper width should be greater than main wrapper+sidebar wrapper).Anyways what do you think. I'll be working on this template in the next few days so stick around.