First, you’ll need a Google Account to sign in (if you don’t already have one). Then you’ll need to prove ownership of any sites that you’d like to add sitemaps to. You can do this by uploading meta tags or a unique file to your site that they will provide. Once you are verified as the site owner, you can simply submit the URL of your XML sitemap. In addition to submitting your sitemap, this site provides a host of information including any crawl errors, pages with the highest PageRank, the top search queries for your site, and so much more.