To get an overview of your topic from different perspectives, or to get some background information to be able to narrow down your topic, you can use reference sources. Start with the following databases which provide access to hundred of online encyclopedias and reference sources.
A good documentary could help you explore your topic.
Search KANOPY, a database of streaming videos, for relevant titles.
Below are some examples of what's available:
You can also consult the following specialized reference sources. Some of these sources are now available online. The other ones are located in the reference section on the lower level of the library.