What questions to ask a prospective private money lender?

[Brook Rieman]

My husband and I are looking to flip and/or BRRRR in Bloomington, Indiana and surrounding areas. We are exploring using private money and have had a few people contact me through BP but how do I know they are legit? I would ask for references from past deals but what other questions should I be asking and things I should be looking for? Any tips on the process of partnering with a private money lender, terms, etc? We are new to all of this and any help would be appreciated.