The Summa Theologica of St. Thomas Aquinas-Summa Theologica is the best-known work of Thomas Aquinas (c. 1225–1274). It was intended as an instructional guide for theology students, including seminarians and the literate laity. It was a compendium of all of the main theological teachings of the Catholic Church. It presents the reasoning for almost all points of Christian theology in the West. The Summa's topics follow a cycle: God; Creation; Man; Man's purpose; Christ; the Sacraments; and back to God.
Other Major Works of Aquinas - Offers resources in both English and Latin. These texts were originally organized by Fr. Joseph Kenny, O.P.
Internet Encyclopedia of Philosophy - Provides open access to detailed, scholarly, peer-reviewed information on key topics and philosophers in all areas of philosophy.
Stanford Encyclopedia of Philosophy - Organizes scholars from around the world in philosophy and related disciplines to create and maintain an up-to-date reference work.
Guidelines on Reading a Philosophy Paper - Provides information on how to read a philosophy paper.
Guidelines on Writing a Philosophy Paper - Provides information on how to write a philosophy paper.
Overview of the History and Subdisciplines of Philosophy- Wikipedia provides a synoptic view of philosophy in outline form.