i am interested in music?which course i want to taken? please guide my career

Music is not a small field. First decide what exactly you want to do in this career called "music". Figure out whether you want to specialize in any particular instrument or you want to be a composer or an arranger or a sound engineer or a studio recordist so on and so forth. There are different kind of career option available when it comes to music. There was a time when music was done more for mental peace and one's own satisfaction than for money. but now music has become commercialized. There are different courses in music available for beginners as well as intermediates and pros so it really depends on what level you are currently. But since I am a musician myself I would recommend you to get the degrees from the royal school of music in all the eight grades in any particular instrument or western classical music which is something really great and learn for music aspirants. Good luck!