The North Carolina State University Libraries have produced a good, three-minute introduction to the process of peer review: https://www.lib.ncsu.edu/tutorials/peerreview/.
Before conducting your search:
The most comprehensive database for literary studies is the MLA International Bibliography, which forms part of Literary Reference Center Plus.
Begin with the database above. If you are looking for material on gender studies, history, or visual arts, you can try one of the specific databases below.
Once you have found relevant resources, use the "Full Text Online" link to get access. If the library does not have access, request the item through Interlibrary Loan.