Consider your information seeking needs, what questions you have, and what answers you are seeking. Take time to analyze and evaluate your search results, it is a slow process at first but with practice becomes second nature. Your goal is to ensure you have found the most authoritative, accurate, objective, up-to-date, and scholarly information available on your research topic. Re-using sources provided from your class is a great start, but there is more out there to discover.
Some quick and easy definitions for the types of resources you might find.
Scholarly/Peer reviewed- these are written by scholars or professionals who are known as the experts in their disciplines. These often include research results and span across subjects. Peer reviewed articles are evaluated by peers within the field.
News articles- there are different types of news articles, some are known to be substantive in that you can trace the news back to the original research. Others may not provide the original source and may be less trustworthy.
Popular articles- these may reflect the trends of the general public, may include opinion pieces, and are often meant to be a form of entertainment.
Sensational articles- are designed to get a certain reaction, may also be known as "fake news", and do not generally follow standards of journalistic integrity. They are not considered to be accurate or appropriate for use in the scholarly discourse community.
Recognize that this is a general overview. Some of the distinctions between each type or more nuanced.