I want to be like elon musk. How and where do I start?

Three things:

1. Pick important problem, not cute ideas;

2. Learn to sell and market at young.

3. Trust others greater than you.

that is how Elon Musk was forged.

Elon Musk is a businessman, not a nerd or a coder - although he is not terribly bad at those things. He became a businessman at age 12, when he sold the game he built.