In a world where misinformation spreads quickly, it's important to learn how to find credible sources, and spot sketchy ones which may contain misleading content.
If you want to avoid fake news and stay away from biased sources, you can use the CRAAP test to evaluate a source. It goes as follows (credit to the University of West Florida)
Currency: is the information current? Many times on Facebook, you will click on a story and notice that the date was from a few months or years ago, but your "friends" are acting outraged as if it is happening in the moment.
Relevance: is the information important to your research needs? This criterion perhaps applies most if you are out seeking information, rather than just stumbling across it. Does the information relate to your question and at the appropriate-level (elementary/advanced)? Have you looked at a variety of sources before selecting this one?
Authority: who is the author/publisher/sponsor of the news? Do they have authority on the subject? Do they have an agenda?
Accuracy: Is the information supported by evidence? Does the author cite credible sources? Is the information verifiable in other places?
Purpose: What is the purpose of this news? To outrage? To call to action? To inform? To sell? This can give you clues about bias.