These four moves from Web Literacy for Student Fact Checkers by Michael A. Caulfield will help you go deeper in assessing the quality of your sources.
When encountering a news or information source, ask yourself...
What do you know about the source?
Who publishes it? Who owns it?
Does the source have an Editorial Policy?
Does it follow a Code of Ethics?
Lack of an explicit and prominent editorial policy or a statement of ethical standards is a red flag.
High-quality, investigative news sources have explicit editorial policies and follow a code of ethics or professional standards.
Examples: Society of Professional Journalists (SPJ) Code of Ethics; Ethical Journalism Network's 5 Principles of Ethical Journalism.
Specific examples of policies and standards:
Accountable sources issue corrections for errors and inaccuracies they subsequently discover. Corrections and inaccuracies should be addressed on the original content for an online source. For a print source, the corrections and inaccuracies are usually addressed in the subsequent issue. Fake news sources are not accountable for their content.
Accountable sources sign their stories and take personal and professional responsibility for the content. That means that articles should have bylines (the names of the authors).
Can you click on the byline? Where does it lead?
Google the author names. Is there a LinkedIn profile? Some other form of biographical information? What has the author done in the past? Does the author's background and experience qualify them to write on the article topic?