Deals with Google AdWords
See Google Adwords tutorials here….
Also Analytics is avaialble under a tab in AdWords account.
For Google Analytics, those of you who are using wordpress.org (paid version) should use the
plugin called “Google Analytics for wordpress” https://dl.dropbox.com/u/16674273/ad737/GoogleAnalytics.docx
You should also watch the tutorial: http://wordpress.org/extend/plugins/google-analytics-for-wordpress/
If you can’t install plugins since you are using the free version of Wordpress.com (not.org version), the analytics data is there for everyone to see on the dashboard or by clicking http://www.wordpress.com/