Google Scholar searches across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites. These resources can be very useful, but keep in mind not all of them are peer-reviewed.
How to access UW Restricted materials in Google Scholar:
Tip: If you don't see the "University of Washington - Full Text @ UW" link on the first page of results, click the ">" icon to see more results.
Academic Search Complete is an excellent database for getting started on any topic and locating scholarly AND popular articles.