Dreamwidth style system discussion

Hullo? Um, I have mostly been a tinkerer in HTML and CSS for some time now, but while my HTML skills are generally decent, my CSS (and my minimal knowledge of S2) tends to be sort of "Does this work? No? Maybe this other thing I vaguely know about will work? Fail, fail fail... Success!" and it'd be nice to be more knowledgeable about how exactly to achieve the results I want. I'd also like to finish converting the layout I started, heh (there's a particular snag that's halted my progress that I suspect I could solve if I was more familiar with S2 and CSS concepts), though probably I will start a brand new project specifically for the class.