There are three main ways of finding scholarly articles.
1) Review the works cited in your course readings, and pay attention to any professor recommendations. Use the library databases to gain access to articles, the library catalog to look up books, or interlibrary loan to request either books or articles we don't have.
2) Use the search on the main library website to find articles, books, news, media, and more. You can also search in specialized databases for almost any subject--law, film, education, history, etc.
3) Practice searching references and tracking citations. References are the works cited, and citations are articles that cite the one you are reading. Both are great ways of finding related articles.