How to become an actor, or sports broadcaster?

[Col]

Hi, im 13, and i want to either become an actor, or a sports broadcaster(like working on a sports show, sportsnet connected.) I know LOADS about sports(baseball, hockey), and for my age, i dont no any peaple who know as much as me about hockey and baseball(im not trying to be full of myself, srry.) But if i want to become a sports broadcaster, how do i start? Now for acting, ive been in LOTS of school plays, ive takin 1 drama course in school,( im gonna keep taking them), and ive had quite a bit of acting experience acting in front of large audiences. AND I REALLY ENJOY IT!!!, Im deffinetly not scared to act in front of LOTS of peaple. So where do i start?, Sould i start trying to make a big career out of acting when im 13-14-15?, or when im older, and when im old enough to go to acting school?, And i want to become an actor who plays in movies, not like a stage actor. And i don't want to just act to be famours(thats a reason), but i also want to act because i really enjoy it! Please, only serious good answers. THANKS!!!