Well, an institution if you want to practice in USA or other places that require. You would be very limited in how much access you have to the herbal products though, which are really important. If not there is more than enough online resources available for learning the theory and acupressure techniques. Check out classicalchinesemedicine.org to start. There are also a lot of classes available on healthy seminars and https://association-for-traditional-studies.teachable.com/