You're looking for all three types of sources:
|Primary sources||Secondary sources||Tertiary sources|
|What they are||
The things you're studying
Analysis of the things you're studying
Background information (overviews/summaries)
|How they help you||They're what you're studying. Reading them or watching them is the first step to understanding them.||They tell you what other people think about your topic.||They introduce you to new concepts and help you find citable sources -- but are not themselves citable.|
Please make sure that your secondary sources are all scholarly analysis, not popular analysis! Here's the difference:
This video explains the difference in more detail:
Video credit: Carnegie Vincent Library at Lincoln Memorial University.
Advice and recommendations for FSEMs in general, and for English research.
The Citing Resources guide gives you examples of perfectly-formatted citations. Zotero is a free app that keeps track of the sources you've found, and generates citations without any typing.