There is this thread, which you can find the link under Resources:http://www.guildportal.com/Guild.aspx?GuildID=3780&ForumID=22042&TabID=27537&TopicID=541760Another place to learn about CSS is:http://www.w3schools.com/default.aspAnd for all the other Classes and IDs not listed in the first link, the easiest way to find them is to go to the page you want to adjust. Find a word in the section you are interested in. Right click and View Source, then Find/Search (Ctrl+F) for the word and look for the Class and/or ID it uses.An easy way to get started is to use your site's current CSS as a starting point. View Source and at the top you will find it inbetween <style type="text/css"> and </style>You can clean up the formatting a little to make it easier to edit later.
Hope that helps.