I got the impression from the start of this thread that your position was that it was not a good idea for companies to sell to individuals advance medical kits without the appropriate training. It seems to me that while you believe that you either have or may have the training, if I were selling comprehensive medical kits, based upon your initial assumption, you would be ineligible to purchase said kits. It seems to me somewhat hypocritical to carry or even posses ALS equipment for which at best I suspect is limited training.
As I am unfamiliar with schooling in Holland, my assumptions may be all wrong. In the US generally 18 years old-post high school is the age at which an individual would be a nursing student at the Registered Nurse (RN) level and where ALS intervention would be taught. While many US high schools have vocational-educational programs of which nursing may be a program, to the best of my knowledge these are all at the Licensed Practical Nursing (LPN) level. ALS techniques are, again to the best of my knowledge not taught at this level.
Pete