LLRX, as usual, has very helpful articles this month.  For example, check out "It’s Not Rocket Science: Making Sense of Scientific Evidence" by Paul Barron.  "The purpose of this article is to review a search process using advanced search query features in Google, Yahoo, and other search tools to find publicly accessible Web-based information on toxic substances and the law and, more specifically, the reliability of scientific evidence about toxic substances." The article walks you through the search, teaching techniques and strategies far beyond basic "googling."