Women's Studies is deeply intertwined with other disciplines. Don't limit yourself to just women's studies as a subject heading. You will be missing out on lots of other great resources.
You may find that women's studies are addressed in books all over the Library but there is also a category of books that considers it primarily.
There are many ways to search but it's often easiest to find books (especially in the catalog) when you know the subject headings that describe them.
Subject headings are words that are used to describe what the books are about. Subject headings are more than "keywords" and help you find all the books on you topic. The most important things to remember about subject headings are:
These are some examples of subject headings in the catalog:
These are Library of Congress subject headings.
Instead of, or in addition to, searching the catalog, you could also go up to the stacks and browse the books in any of the following call numbers as the books are arranged by subject. Find one on your subject and you are likely to find more near it.
Most books specifically on feminism, gender or women's studies are in the HQ range. Here are some other call numbers you may find useful:
Of course, there are likely to be many relevant books outside these call ranges. Many books cover a topic as it relates to the role of gender, but are shelved with the other books on those subjects. For example, you can find books about French women writers such as Colette or Marguerite Duras among the books on French literature. Use the name of a feminist (Gloria Steinem or Susan B. Anthony) to find biographies, memoirs, and collections of letters.