I hired a car for you = I hired a car on your behalf. I hired a car and it is for you to use.
Can you lift this box for me? = Please lift this box. I cannot do it because it is too heavy, so I need you to do it instead of doing it myself.
Can you bring these books to me? = Can you collect these books from where they are now and bring them to where I am.
Student or Learner