The document provides tips for making $680 per month from a single blog using Google AdSense. It recommends focusing on one niche, creating quality and unique content, making the blog interactive for comments, learning AdSense placement techniques, blogwalking to related sites, giving free downloads to visitors, optimizing the blog for search engines through on-page SEO and social media promotion, and maintaining the blog for at least 3 months despite a lack of early revenue. It also lists the plugins and tools used to build and optimize the example blog.