A textbook's a manual of instruction or a standard book in any branch of study. They're produced according to the demand of educational institutions. Although most textbooks are only published in printed format, many are now available as online electronic books and increasingly in scanned format in P2P networks. History Texts specifically designated for educational purposes were written in ancient Greece. The modern textbook has its roots in the standardization made possible by the printing pre… (More on Textbook)