Can someone walk me through the process of a rent to own home?

We found a house we love, and the best thing is the monthly payments and down payment needed to rent to own this house. It is something we can manage. We are currently losing our house due to foreclosure, so I’m wondering if we would even be eligible to rent to own a home.

Are credit checks involved with this process?

What questions should we ask when speaking with the person selling the home?
Thank you.