What areas do you think are unnecessary for a manager to develop?

Can some please help with this assigment? I need to write a  3 page report.

What areas do you think are unnecessary for a manager to develop? And, how would you recommend that new managers acquire their HR knowledge? Would you send them to a week-long seminar given by an external firm?  Or, would you recommend a 10-week internship? Would you include a regular update on HR issues? If yes, how often do you think it is practical to have an update?

What is the importance of core HR knowledge for managers
What areas should be inclusion and exclusion in new manager orientation?
What venue should be used for training new manager on Hr issues
What are the major HR functions: recruitment, compensation, benefits, and performance management