From your search results, select the resource type you are looking for - Journal Articles, Books & Media, or Magazines & Newspapers - and click "See all results" to filter and review your options:

Refine your results using the filters on the left hand side of your results screen - useful options are Scholarly & Peer-Review, Content Type, and Publication Date:

Once you find the resource you need, you can email it to yourself, save permalinks, and generate citations.  Also, find the full text using the "Full Text Online" link or "Get It @ Penn State" button: