Best way to obtain the 'down payment' money.. using "other peoples money" OPM

NEWBIE INVESTOR

There are some owner financed deals that look good, but need about 25% down.

Where is the best place to get the funds to fund the down payment? Family & friends are out of the question.

Does hard money lend on a second? Local banks? Private lenders? Where do I find them? The parks I’m looking at are out of state.

Thanks