1) Literary Databases can offer a variety of articles on various works, genres or authors. Generally, 'peer reviewed' sources offer more in depth analysis. Peer reviewed sources can also offer book reviews that isn't as detailed.
2) Its generally easier to find literary criticism on a work the older it if its written by an author who's famous for writing another work. If you can't fnd any analysis about the work try researching the genre
Literature Resource Center is an extensive database which includes:
Reviews of books of all sorts, from children's literature to adult fiction, from popular non-fiction to scholarly studies
Biographical essays on more than 130,000 authors
Full text of thousands of poems and short stories published in contemporary journals and magazines
Overview essays on thousands of books and literary topics
Links to quality research oriented websites on authors and their works including pictures and audio interviews
Literature Resource Center opens on the BASIC search which allows you to limit your search by: