The CRAAP Test is a useful guide to evaluating resources. CRAAP is an acronym for the general categories of criteria that can be used to evaluate information you find.
Examples: .com (commercial), .edu (educational), .gov (U.S. government), .org (nonprofit organization), or .net (network)
Many times, you can determine whether or not an article will be useful just by examining the citation. First, make sure you are looking at the most detailed version of the citation/ abstract that is available to you.
Then dig for specifics:
Thanks to the Musselman Library at Gettysburg College for these tips.