How should I start off my path to real estate?

I am 16, and planning on going in real estate because it seems like hard work in that business pays off compared to other places and because I am very persuasive.
When I start my junior year at my high school.. I have about 2 free clases what do you think I should take that will help me with real estate?
I am going to go to "cal state san bernardino" after I graduate high school. So what clases do you guys suggest I should take there and what should I major in.. that will ultimately help me with my real estate journey.
Also someone suggested to me I should get insurance..220 license ,real estate, mortgage license? can someone explain to me what all that does?