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How do you invest in real estate without using money?
They're probably talking about flipping houses. The conventional wisdom when flipping is to purchase the property with a mortgage or other loan on day-0. Do the work to rehabilitate it. Get it listed for re-sale promptly (this step has varying strategies) with a profitable price but one that will make it move. Have the house sold on or before the first payment would be due. This is anywhere from 30 to 60 days. The flipper then never has to make a payment on the mortgage or loan, the costs of rehabilitating the home are recovered promptly (potentially before any loan, credit card payments, or invoices are due), and there is a profit. This also assumes that either a 100% loan or some other mechanism is used to address closing costs and fees. This model fits the premise of the infomercial in that you make money investing in real estate but never have to tie up any of your own money in the process.