Occasionally one finds free educational sources: WellesleyX offers a course in Ancient History: "Was Alexander Great? The Life, Leadership, and Legacies of History’s Greatest Warrior" https://www.edx.org/course/was-alexander-great-life-leadership-wellesleyx-hist229x#.VKjJLckYF2A Apparently the 13 week course is FREE, and on-line, and open to all (no prerequists), starting 4 Feb. 2015.
