What all things should I be doing to become an executive officer of a already existing great company.

Just how everyone has big dreams, I also have one where I want to become an executive manager of a big company. To precise the CEO of that company.

I do not know from where to start from, what should I be doing to get till there; moreover the courier that I am perusing is nothing related to business,

( perusing Btech and also want to get into entrepreneurship, this question will also help somewhat solve an issue with this as well. )

From where should I start?
Going from learning about business and then about the company and how its internal working and all.

Lets take Adobe company as an example.
What if I say I want to become CEO of Adobe in the future, what all suggestions you would like to give me taking is example into account?