If you’re one of those want control over Google Analytics tracking code, Google has released Google Analytics on Google Code to let you create a custom Analytics installation on your site with all information you need to know. Do you want to change the longevity of your marketing campaigns? Or add a new search engine to the list of those Analytics recognizes? How about configuring tracking to use both Google Analytics and Urchin Software from Google?

If you're beta-testing Event Tracking, Google Code has an entire section to help you implement it on your site. There's an E-commerce overview and E-commerce API reference. And if you just want to learn more about how Analytics works, you can read about tracking code execution and how Analytics uses cookies.