There are many sources of information -- websites, books, magazines, journals, newspapers, friends -- and which sources you use depends on your needs.
For your college research needs, your sources need to be reliable and credible. Credible and reliable sources can be more scholarly or more popular:
Sources that are more scholarly, such as academic journal articles, are considered more scholarly due to the expertise of the authors, advanced vocabulary and concepts, and the rigorous review and editing process.
Sources that are more popular, such as magazine and newspaper articles, can also be reliable and appropriate (perhaps for a brief speech or short paper), though you may find more opinions there. They also do not discuss a topic in as much depth as a more scholarly source would.