Effective researchers and writers understand scholarly research as joining a conversation. Literary scholarship responds to and builds upon the work of other scholars and takes into account information about historical and social context.
Your task as a researcher is to join this conversation by positioning your own argument in relation to what others have said. When researching, ask yourself:
Brainstorm search terms
Get targeted results by combining search terms with AND, OR, and NOT
Follow the citation trail
If you find a source that's extremely relevant to your topic, look at the bibliography and works cited to find more sources! Each source is participating in a larger conversation, so explore whether the other scholarship they're using and responding to is useful for your own research.