To understand a feminist theory or get an overview of a feminist topic, DON'T start with articles, start with encyclopedias. Here are some places you can go to that are credible, citable, and provide overviews of gender studies issues.
Yes, you can go to Wikipedia, but, remember you can't use it in your paper. And I've been disappointed sometimes in the coverage of deeper feminist ideas.
See more of this sort of thing under the "Books" tab.
Your Subject Librarian