A newbie question about BRRRR basics

[Dan Lopez]

Hello, I am very new here.

And happy to start learning.

I have a basic question i have and don't understand.

For BRRRR strategy, first step is to buy.

But how do you actually find the property which is undervalued? Or it's not trivial and takes a lot of experience to learn the market and the acquire the knowledge to recognize that this deal is actually very good?

Thank you in advance.