[achompas]

AND a machine learning mechanism to decide what content to deliver to the visitor.

This sounds like a pie-in-the-sky idea. How can you develop a startup around a ML algorithm when you can't code and have never studied ML? Do you have a technical co-founder?

What kind of "mechanism" (these are actually called algorithms or machines) will you use? What frameworks or languages (NumPy/SciPy, pandas, Weka, Mahout; Java, Python, R) will you use to implement this algo? Do you know what data you'll analyze? Or how you'll normalize that data?

Get to the point where you can answer these questions and you'll be on your way. Until then, you'll struggle to find a technical cofounder (or, if you have one, you'll struggle to communicate with them and evaluate whether they are good at what they do).

tl;dr: unless you have a technical co-founder, you'll need much more than a Stanford ML course and some PHP to make this work.