Should a Private Investor create an LLC before supporting a flip?

[Luis Martinez]

I am considering investing in a flip for the first time and am hoping to get some feedback on how to best structure the transaction. Are there any advantages or disadvantages to designating an LLC for the deal? How do private lender vets prefer to set it up? I would like to establish partnerships and experience both in state and out of state (CA, IL, OH, CO) before investing in my own rental properties. I live in California.