Know as much as you can about your topic before diving into scholarly sources. Encyclopedias, magazines and newspapers are great places to start learning about your topic. They can also help you to start thinking about keywords, experts on a topic and find references to articles that you can use to build your search strategies.
Credo Reference is an eyclopedia database that provide you with a great place to start your research. Try a search out below.
To justify your arguments your will need to include scholarly sources into your paper. A good place to start finding these sources is Academic Search Complete.
Is your topic interdisciplinary? Find other database options here: