Hi, Incase you want to become a marketing manager take up a relevant course. Take a course in economics, finance, marketing, advertising, business etc. After your bachelor degree in the same you can gain some work experience or maybe internship is good before moving to masters degree. Start creating your networks and connect with them for your personal growth. You will have to give MBA exam like CAT, MAT, XAT etc to get admission in reputed bschools to pursue this course. All the best.