Sell a property for cash vs. Hard money loan

[TyWonda Fudge]

I am a newbie real estate investor in the city of Detroit. I just purchased two properties within the last couple of months. One of my properties already has renters. The other one someone is living there and I cannot put them out until I receive the deed in the mail. However I am looking for more ways to buy more properties without using my money. So I wanted to know if it would be a good idea to sell my second property (after renovations) and to use that money to purchase more properties. Or use a hard money loan to purchase more properties?