I started out using Mnemonics back when I was 16 years old back in 1973 doing extensive library research on the topic, and then buying and learning everything written in the famous classic “The Memory Book” by Mental Magician and stage performer Harry Lorraine, and basketball star Jerry Lucas. The method outlined and thoroughly covered in that book is known as the Major System. I’ve since expanded my repertoire of mnemonic devices to embrace every system, modify, and combine them as needed, to use as each individual memorization task requires.