How to make money flipping houses. Free real estate investing course. If you have ever wanted to flip a house for profit, you can discover how to flip houses for quick cash. Most Real Estate Investors get started investing in real estate by wholesaling or doing a house flip with no money down. Did you send out your yellow letters or postcards? What will you do when a motivated seller calls? How can you make an offer to buy their house or property and make money? Making offers on properties is a key component.