i want it to be simple and short
Dear Professor xxxxx
I am writing to request more information about your xxxxx course.
I am really interested in this subject and I am thinking of applying to your graduate program but I need to know what the requisites for this program are and what are the sources that one must pass to successfully finishes this program.
Thank a lot
NOT A TEACHER
(1) You are very wise in wanting to keep it short and simple.
(2) Americans prefer notes that "get to the point."
(3) First, IMHO, it is a waste of words to write "I am writing ...."
(4) So maybe something "to the point" such as:
Dear Professor Smith:
I am very interested in journalism and thinking of enrolling in your
graduate program. May I please know the course requirements and the
criteria necessary for successfully finishing the course.