How to Learn Memory Techniques

I'm offering services for a vast variety of clients basically everyone who wants to memorize anything personal or professional field can book a course on my website. Normally courses are held online and they are one-on-one courses. I will also start offering group courses because the main advantage for clients is that it makes it cheaper for each individual client. Most varied subjects that goes from stuff like teaching a poker pro and poker millionaire to memorize arts in a poker game, and to teaching a holding boss about basic memory techniques and chess with chess grandmasters. My courses for learning languages of course use the look and method completely differently to my courses for people who are studying history or who are studying law.