Whether it's a book, article, or website, you need to decide how appropriate any resource is to your research needs. Consider the audience, the currency, and reading level of the material.
If most of your resources are websites, then consider looking at the Website Evaluation guide before you commit to using a site. And if you find yourself questioning what you're reading, then consider reviewing the Misinformation, Disinformation or Malinformation guide.
The following short videos cover the basics of evaluating resources for authority, accuracy, and other criteria.