As you work on your research project, you may wish to use a "funnel approach" to your topic:
Here are some examples of scholarly works with a broader focus.
Search Collins+Summit+Articles
Search Primo for broad overviews on your research topic.
Need more basic background information? Each of these online collections will introduce you to a wealth of dictionaries and encyclopedias. These can be especially useful when you initially can't find an overview in Primo.