I am 18 how do i start?

I turned 18 last month and high school just ended. I am getting lot of advice but i am getting super confused trades,degrees,skills blah blah. I really want to start a career in such a field where i will be relevant in the coming years. I am very specific about my interests i like business and economics (not accounts) I want to go into management thats why i was thinking about joining a top b-school for my college. But the thing is majorly online with less offline networking but i have heard only good reviews about it and the faculty is awesome i am thinking of working or freelancing alongside to fund my education. What do you all think am i on the right track or there is something else i can do. Please dont hold back any advice as it will be very helpful. Rules said no personal info but ill tell im from india.