What classes do i need to become a surgeon?

4 years of undergraduate school, 4 years of medical school, and 3-10 years of residency and fellowship training.

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.