Selecting a topic is the first step. If the choice is up to you, pick a topic that interests you. Think broadly about your topic and do some preliminary research by consulting subject encyclopedias, dictionaries or handbooks. You can also check appropriate current periodicals or browse shelves of books classed in subject areas to get ideas on research topics.
You will probably have to narrow your topic since most topics are too broad for a research paper. For example, you want to research the use of Ancient Greek comedy.
This topic is still too broad and you will need to further refine it. For example: Women's role in the comedies of Plautus.
Once you have identified your topic:
Use dictionaries and thesauri to define other terms to build a useful list of terms. These terms will become the keywords for searching catalogues, indexes, and databases for information about your subject.
For example:
Main concepts: women, role, comedies, Plautus
Secondary concepts: female, women, woman,
role, character, characterization
comedy, comic drama, , Plautus, Miles Gloriosus
Once you have identified key terms for your topic, you are ready to shape your strategy for searching catalogues, indexes and databases.
To visually spell out the concepts and relationships among the ideas, check out these examples of concept tables. (Virginia Tech University Libraries)
Go to the section on Search Strategies as well as University of Saskatchewan Library's How to Formulate a Search Strategy guide.