A good book that also touches on this subject is: "moonwalking with einstein the art and science of remembering everything". It also covers the subject of primi

A good book that also touches on this subject is: "moonwalking with einstein the art and science of remembering everything". It also covers the subject of priming and why its important. People used to memorize entire books by studying them for years. In a time before printing presses were a thing it was considered normal to spent long long hours learning the contents of a book by heart.