The Google Tools
Adsense: As the name suggests, this one puts ads on your site. You get paid every time some one clicks on them (or something like that). Given time, the system adjusts to show ads specific to the content being displayed on the page. The next thing this tool lets you add to your site is the Google search bar. Finally, you can add referral buttons for FireFox, Google, etc. I added the site search and the ad banner to my sidebar.
Analytics: The Google version of Statcounter minus the counter. While there is no display on your webpage, it records access to you site. Expect some cool looking graphs. The only catch is that this data is consolidated every 24 hours, so that’s when the graphs will get updated next (at least that’s what the site says). Add this code at the end of your blog using the template tab.
Last up, the Google Site Tool I did not use was Google Adwords. This one lets you create ads, which will turn up on the Google ad banner.