Take a class on women revolutionaries locally or online. If you can't find one that focuses on this topic, ask instructors who teach related topics whether they'd be willing to do an independent study with you on the topic of women revolutionaries. This can be a great way to customize a course around what you're interested in.
Read books on women revolutionaries. Check bookstores and libraries for books on particular women revolutionaries or on the general topic. You may also find information by reading about the particular movement, such as the Mexican or Russian Revolutions. For example, Cambridge University Press has published a book focusing on women and the Russian Revolution.
Search online for information on women revolutionaries. You may find websites dedicated to particular female activists and revolutionaries, but you can also find links to books and other materials. The web is often a great place to start mapping out the topic by creating lists of books and individuals who turn up under these search terms (and related ones).
Visit museums and other historical sites that include exhibits about particular revolutions in history. You can often find information about women who participated. You may also want to ask staff members about female revolutionaries as you may find someone who is knowledgeable about the topic and willing to teach you more.
Find academic journal articles on the topic. In addition to books, journal articles can provide a wealth of information on women and revolutions. Most universities allow individuals to use or copy materials within the library although you'll need patron access to order articles not held by the library.
Look through the archives that contain information on women revolutionaries. Access can be restricted to some archives and most have rules that you'll need to follow, but you can sometimes find primary source material, like letters or diaries, from women involved in the revolution.