It's not so difficult as to require a course. Literally, the Art of Memory website and forum will do you well (they even discuss more advanced techniques on the

It's not so difficult as to require a course. Literally, the Art of Memory website and forum will do you well (they even discuss more advanced techniques on there such as Gavino's Massive Memory Palace). I can confirm that within two hours of learning the technique, I was able to memorize a list of 100 random objects with 100% recall hours later, even days later without practice. You could ask me where an object was in relation to another, you could ask me to name them backwards... you could even pick an object at random and I could work forwards and backwards from it. The effectiveness of the method of loci shocked me to say the least. And I showed anyone that was willing to see. Everyone thought there was some sort of trick, it seems impossible to be able to memorize that many objects so easily. Truth be told, you can go to 1,000+ if you want to. It's all just a matter of what you want to remember.