Do a little research on using CC's for your business and paying 0% interest - there are quite a few people who teach about this.

I'm doing a refi on a multi-family building right now with a lender I found here on the BiggerPockets Lender Finder - https://www.biggerpockets.com/business/finder/lenders They've been able to help me get a DSCR loan which others on this post have mentioned and they've been pretty quick should be able to close before the new year in less than 3 weeks from when I started the process!

Buying rental properties is investing in a business and a place to make your money and time work for you.

approach it the same way you would interviewing a business partner because that is what you will be. 

As a landlord, you are representing yourself to the public as a business. 

A real estate business can also potentially generate a SOLO IRA or something like that. 

Quote from @Jonathan Grzeszczyk: David Greene has a series (Sold, Skilled, Scale) that teaches agents how to run their business like a business.

We kind of throw out these definitions for our business because they can become misleading. 

Flipping is actually more a business than it is investing and you know how much goes into that.

You have to take your pick between charity and business.