There is a brand new Web page to help students doing research on the Bronte Sisters: Anne, Charlotte, and Emily. It can be found at: http://lib.colostate.edu/research/english/Brontes.html
It is linked from the English Language & Literature page (one of the Research Guides):
http://lib.colostate.edu/research/english/
There are other authors with Web pages about them too:
Chaucer
Dickinson & Wright
William Faulkner
Milton
Flannery O'Connor
Poe
Shakespeare
Virginia Woolf
William Carlos Williams & Wallace Stevens
All these pages let you know where the books are, where to identify journal articles (and what to search), and links to relevant Web pages, annotated. A lot of the Bronte Sisters oeuvre is available online.
Also found on the English Language & Literature page are some literary criticism and book review finding tools:
Finding Literary Criticism in Books
Locating Literary Criticism in Journal Articles
Book Review Indexing Sources
See also:
Searching MLA Bibliography by Subject, by author
Beat Writers
Ecofeminism for E631)
Goddesses (for E336)
Take a look! There are a few more pages that are not mentioned here.