The goal of a reset stylesheet is to reduce browser inconsistencies in things like default line heights, margins and font sizes of headings, and so on. The general reasoning behind this was discussed in a May 2007 post, if you’re interested. Reset styles
A brief overview of how to use the Google Analytics interface. If you are new to Google Analytics or you’d like to pick up a few tips on how to use some of the different features, this video is a good place to start.
A sitemap is just that, a map of your Web site. In the beginning they were used to help visitors find their way around large Web sites, especially those with a deep directory structure. Many sites still use them, but as people become more experienced at u