This companion volume to "Master Your Memory" explains the memory matrix devised in the 17th century to enable the learning of up to 100 items. It also describes the self-enhancing master memory matrix which the author developed for memorizing up to 50,000 items while at the same time improving all mental powers, including intelligence and creative thinking. The first 10,000 key memory words are set out in such a way as to enable the organization of any list.