Tamar from 10e20 has written an introduction article about Google’s Webmaster Central which can be the #1 Google source for your site. If you feel complex or still haven’t tried all cool features, Tamar takes you a nice tour with images.

She talks about Site Verification, Crawl status, Crawl rate, URL removing, Page Rank status, Search Query status, External Links status and submitting a Sitemap. If your site is new, you won’t see all cool statistics in your central. But 10e20 is a well established site and you can see what kind of data lies in each section.