This document provides tips for optimizing Google AdSense units on a website to improve earnings. It recommends having at least 500 daily unique visitors and focusing on properly choosing, positioning, and formatting AdSense units. Specifically, it suggests using large rectangle, medium rectangle, and wide skyscraper units placed above the fold and testing the "Champion Combo" of a large rectangle below post titles. Section targeting and testing different configurations is also advised to improve ad relevance and earnings.