I have found LinkedIn to be my fav platform.

I'm always screaming on here "log in to Linked In and look at someone's background before you do business with them."

That can be found on their brokerage website or possibly LinkedIn.

Networking in person is still one of the most effective ways to meet private investors.Online Platforms & Social Media: BiggerPockets itself, LinkedIn, and other investor forums are great for sharing deals and connecting with potential partners.

Look up Barry Minkow on LinkedIn, he's done a ton of stories on this firm. 

Sometimes other agents might know investors or mentors who are open to collaborating.Mixing in some local events and connecting online through BiggerPockets, Meetup, or LinkedIn can really help you expand your network.

Just re-joined after a verry long time and figured I'd introduce myself with something more useful than a LinkedIn-style bio.I've been flipping for about a decade across Greater Phoenix and Greater Cleveland — around 50 flips, 20 wholesale deals, and 10 years as a Realtor somewhere in the mix.

LinkedIn has been surprisingly useful for this -- local family office folks, retired business owners, that crowd often has capital.Meetups and REIA events are still valuable if you actually follow up and stay in touch.

You could try this directory of New York real estate clubs, Meetup.com, EventBrite, LinkedIn, Facebook groups.

@Ryan Foster,  it amazes me how many investors don't do a basic LinkedIn search first.