While an MBA will teach you a lot of great skills, no one teaches you about specific roles within companies. What does it mean to be a modern day operator?
One of the best resources I have found are these notes and accompanying presentations by Keith Rabois on being an effective executive:
Here is the Genius.com annotation
If you want some book suggestions, check out, The Score Takes Care of Itself along with my suggested books for MBAs and generalists.