There are a lot of great answers here but at the core of your question is "how do I become great?"

How did Michael Jordan become great?
How did Steve Jobs become great?
How did Tom Brandy become great?

My question to you is why do you want to pursue online marketing?Are you passionate about it? Or are you wanting to pursue this because you think you can make alot of money doing it?

I know many people that make great money offering online marketing for business but are miserable. I also know many people who love online marketing but can't make a living doing it.

Hope that helps!

Lets get on a phone call soon!