I’ve realized that Eagleton’s Intro to Literary Theory is heavy going for my 3150 students.  Thankfully a couple of them took it upon themselves to tell me they were having trouble.  Thank you!

This page from the Internet Encyclopedia of Philosophy gives a much briefer and clearer overview of the main theories.

Dr. Kristi Siegel provides a more detailed explanation of more theories at her Introduction to Modern Literary Theories website. She also defines key terms and offers links to other sites.  –An excellent resource.