Use the catalog to find books, e-books, journal articles, and much more.
For your r essay, you may want to search some subject specific databases. Start by identifying the broad subject area of your topic and then consult the appropriate discipline specific research guide.
Multidisciplinary databases are very good starting points as they provide you with samples of resources in a wide variety of subject areas.
If an article has been published in a journal, we don't necessarily have the full text. Try these steps: