One of the benefits of using the library for research is that its scholarly resources (academic books, journal articles, etc.) have been written and reviewed by experts. Information you collect from library resources is more likely to be factual and detailed enough for academic research compared to sources available on the general web.
There are several approaches you can take to evaluating a source yourself. One option is looking at the questions posed by the CRAAP acronym:
Another approach - extremely useful for sources you find on the general web - is SIFT, which involves four strategies:
For more details about evaluating web sources with SIFT, we recommend the below videos from Mike Caulfield: