First, do some homework. Determine the name/position/title of the person in charge of admissions. Second, include some statements that indicate you are familiar with the university and its standing in the country in which it is located. Third, certainly, you should include your name. Fourth, if the university is in your country use "snail mail" not e-mail. Fifth, consider the following changes to your request.
Dear (Mr./Ms./Senor/Senora etc. Name)
I'm interested in obtaining some specific information about your MSc in Computer Science.
I have some questions that I would like to clarify if possible.
First, what is the tuition fee for the course?
Second, since it's an online programme, can I establish my own schedule,
my studies,classes and contacts with the University or do I have itare they pre-scheduled by the University?
Third, when does the course start and what is the deadline to
sendsubmit application and other thedocumentation?
Briefly introducing myselfAs a brief introduction, I am [nationality], living in the city of [city]. I hold a Bachelor's degree in Mechanical Engineering and currently I work as [position] for a financial institution (suggest you name the institution if it is widely known and respected).
Thank you for your consideration and I look forward to your response. You may respond by e-mail if more convenient.
Student or Learner