Providing temporary use of on-line non-downloadable software for use by students to access educational content from course textbooks in various subject areas such as language instruction, mathematics, history, science, social sciences, political science, humanities, engineering, philosophy and the arts by means of the Internet and wireless devices, and to create customized study guides, flash cards, and other study materials based on such content; Providing temporary use of non-downloadable software to access non-textbook educational content and entertainment content by means of the Internet and wireless devices, and to create customized materials for personal use based on such content