BRRRR strategy question

[Jordan Leu]

Hi BP - I'm a newbie investor in real estate and trying to better understand the BRRRR strategy. I watched this video from Bigger Pocket's newbie guide to BRRR investing: https://www.youtube.com/watch?v=FBci62dfqaY&t=796

General questions about BRRRR:

1. Do you have to use a private lender or org to initially borrow money? What happens if I have the capital to purchase the property using cash (for lower priced properties of course), or would this be a bad decision? 

2. Is there a reason why (or why not) go to a bank for the initial loan to purchase the home vs. using a private lender? 

Thanks,
Jordan