Here's a basic research approach and sources to consider along the way. Think of these sources as pieces of evidence that support your argument.
1. Early topic exploration (ex. Google; usually non-library sources)
2. Learn the background (WorldCat Discovery: books)
3. Discover scholarly conversations (library databases: journal articles)
4. Support your argument (source citation)
5. Rinse, repeat; drafts & revisions (research librarians, writing center)
Research writing is "recursive," in which drafts can be opportunities to swap weaker sources for stronger ones.