How to leverage the money blocked in properties

[Rahul Gupta]

I have two properties in St Louis MO that I own outright and I have been thinking of ways to not block off all the money I have in buying properties like this as I am reaching the end of my balances soon. 
I do Airbnbs but am open to renting them out of there is a way to get cash out of the houses to invest in more properties. Hoping to get some meaningful guidance from pro investors on how I should go about maximizing what I have and build a portfolio.