If you are off campus, follow these steps in Google Scholar to access any content the library owns:
Follow "Cited By" Links
"Cited By" usually refers to finding more recent research that cited another article. It is an excellent way to find more updated and revelant research on your topic. For example, if you found a journal article published in 1999, you may be able to find out what other research has cited that particular article since it was published in 1999. Not every search tool has this feature, but when it's there, it's worth using! "Cited by" also gives you a rough idea of the importance of the article to other researchers: more important articles will have more "cited by" results. (Be careful: sometimes, a controversial article will get cited a lot because everyone disagrees with it, not because they think it is good!)