Whenever you are considering using a website as a source, it is very important that you review the contents in detail. An easy way to make a determination is to use Jim Kapoun's Five Criteria for Evaluating Web Pages:
There are many other resources to evaluate web pages. One of the more interesting examples is CSU Chico's CRAAP Test.
When searching Google, you can click on the little gear symbol to access "Advanced Search." You can use Advanced Search functions to eliminate some of the "trash" from your search results.
Try these Google Advanced Search Tips and Tricks
Questions on Google Scholar? Check out this link on how to use Google Scholar for effective research (courtesy of the University of Illinois).
You can set up Google Scholar so that if Moorpark College Library has your article, a "Get it at MC Library" link to the article will appear in the right-hand column of the results page. Go to "Settings", then "Library Links" and then look up and save Moorpark College Library: