Come on a student visa

Hello Every1,
My name is Aaseesa, I am an Indian got married in Nigeria to an indian. I am 27yrs old and i am looking forward to come on a student visa there but i am really confused to which course should i choose. I have a bachelors degree in Commerce. Also considering from the P.R. point of view which course would be the best one to go for.
Please help.
Thanking in Anticipation

Take a course that complements your Commerce degree. Or pick a course which you think will be easy for you.

All your concerns and queries are very valid.