These are a great place to start once you've read a work or even before you begin.
Just be warned...Spoilers ahead!
Literary criticism is the evaluation, analysis, description, or interpretation of literary works. It is usually in the form of a critical essay, but in-depth book reviews can sometimes be considered literary criticism. Criticism may examine a particular literary work, or may look at an author's writings as a whole.
Adapted from the Internet Public Library-Literary Criticism http://www.ipl.org/div/pf/entry/48496
Sample keyword search: toni morrison AND beloved AND motherhood
These are great sources for articles of literary criticism and analysis: