Computerized on-line catalog services featuring instructional, educational and teaching materials in all fields of college and professional study; Providing on-line educational study guides and resources in all fields of college and professional study; Providing an online educational course system in all fields of college and professional study; providing online resources and materials for instructors in all fields of college and professional study; providing online educational quizzes and practice tests for students in all fields of college and professional study; providing online portal services, namely, providing links to students and educators in all fields of college and professional study; providing information online to students and educators on a wide variety of college and professional study topics