This infographic from AllSides.com gives a sense for the political bent of a wide variety of online news sources.
The CRAAP Test:
Evaluating Materials from the Web with a Skeptical Eye
Currency -- When was it published? Updated?
Relevance -- Does the information relate to my topic? What audience was it written for?
Authority -- Who is the creator? Author? Editor? Does the URL tell you anything? (.edu, .gov, .org, .com, etc.)
Accuracy -- Are there references? Are there errors? Broken links?
Purpose -- Opinion or fact? Scholarly? Biased? Is it balanced?