Once you have identified the main topic and keywords for your research, you may want to find one or more sources of background information to read. These sources will help you understand the broader context of your research and tell you in general terms what is known about your topic.
For background information on your subject, you can consult reference books (eg dictionaries, directories, handbooks), usually located on the 2nd Floor, Reference, or in the stacks as "Non-Circ." Some useful reference sources for Theatre are:
Dictionary of the Theatre
by
Patrice Pavis; Christine Shantz (Translator); Marvin Carlson (Preface by)
International Dictionary of Theatre
by
Mark Hawkins-Dady (Editor)
The Language of Theatre
by
Martin Harrison (Editor)