While we do have popular culture databases, pop culture is so interdisciplinary, you're likely to find sources everywhere. The question is more likely to be whether to look for primary sources or secondary resources.
Traditional primary sources may include newspapers, diaries, oral histories, transcripts or letters. These often can be found electronically or in special collections or archives.
Primary sources may also include electronic records of USENET groups, social media posts, e-bulletin board posts, fan archives, and interviews.
Secondary sources can help you to study trends in a field, track back to primary sources, and help you to find the names of researchers in your topic area or field, Secondary sources may include journal articles, and books, but you may want to check with your instructor to see if documentaries, fan meta posts, museum exhibitions and other sources would be helpful.
Pop culture research is a great place to think out of the box!
