I am tasked with updating a family of web sites that promote scientific conferences that cater to a niche scientific field. The sites are currently written with some modest CSS layout for the shared common page template structure, but the details of each page are a mishmash of <p>, <br>, and to position the content. This makes it tough to update the content, since the spacings are always changing, and the page ends up ugly at the slightest mod.
So, I'd like to change this stuff into a more CSS-happy state. There are lots of sites that offer tips for specific CSS design goals, but I'm a developer without a lot of web site artistry capabilities and don't have a structure already in mind. Are there any good sites that teach CSS in the context of some relatively mundane -- but effectively presented -- business content? Stuff like the CSS zen garden is way cool, but I'm looking more for something that will both give me some simple text-heavy business data positioning ideas and present those ideas as a CSS learning opportunity.
Does any such site exist?