Dominic O’Brien is an eight time world memory champion. He has authored numerous books on memory, and is one of several internationally recognized memory experts. His book "How to Develop a Perfect Memory" is his most comprehensive resource on the technique he has developed. Unfortunately, this book is long out of print. Used copies at used book stores and ebay have sold for as high as $140.
O’brien does an excellent job of explaining and demonstrating mnemonic techniques. I found a very brief video that explains a variation of the memory palace ( or as he calls it, the memory journey).
In this video excerpt, O’brien creates a memory journey specifically for the story instead of using one from his own experience. He weaves the numbers into the memory journey (39 steps in the tower, and uses associations from his own experience ("When I Turn 64", 10 Downing Street). He also uses a lot of action (turning the key, opening the door, climbing the steps, blair carried away by the swan). He ties in visuals, sound (a Beatles song) and bizarre action (the swan carrying away Tony Blair). In just a few minutes, O’brien deomstrates hwo easy it is to rapidly memorize a 9 digit number like 213964102.
The key to using this method is practice. You need to practice finding and using memory palaces, creating images to encode the information, and make those images both multi-sensory and outrageous. As Dominc ‘Obrien demostrates in this video, one you train your mind to learn each step of the porcess, it is very easy to recall obscure and abstract information.
I have several more example videos I will post in upcoming entries in this series.