Besides Zillow and similar websites, where should I look for leads?

Consult with an attorney to provide a purchase and sale agreement in your respective state with an assignment exhibit included. 

I signed up for Stessa because they don't charge a fee for 1 property and appeared to have a user-friendly website.  

@Ella Marie, I can't speak on behalf of your market, but in my respective market, competition is tough, and the successful fix-and-flip vendors are often full-time operating businesses.

Based on what I am seeing on the Department of State website, in order to do this I'll need to be a licensed broker.

It is very simple and cheaper to set up the LLC in NJ vs NY ($50 vs $200 when going on the state website) what is still an open question is I also need an operating agreement for the LLC once set up, wondering if that is also free as part of just getting the LLC set up on the state website or if I need to use a lawyer or a legalzoom type of service to do that.

Quote from @Sarah Hartstein: Hello everyone, I am brand new to this website and looking forward to gaining some extra insights on property within the US and beyond ;) I started as a part-time Realtor with Keller Williams in Santa Barbara, California, however domestic sales never really “tooted my horn.”

Jeff makes up repeated excuses and strange reasons as to why he can't/won't pay (i.e. family emergency, bank is rejecting wires, software/website is buggy, telling investors to go "f*ck their mother").I'm in a group with 30 other investors who were also scammed by him. 

And the PMs and realtors I know don't want to talk to a website.

I would recommend you start your search on the NARPM website.