Hi @Deborah Purley ,
I believe there's quite a few ways to do it, but I've taken a couple of approaches.
The first is through going to networking events and meeting other investors. These people can be your end buyer, or help you find an end buyer, likely with a small fee.
The second I've done is to set up a landing page that I advertise through Craigslist and other online classifieds. Generally an ad will say something along the lines of joining a buyer's list or wholesale properties for cash buyers or investors. This page should collect their name, phone number and email address so you can send out information about properties you put under contract.
An extra step, that I'm guilty of not doing all the time, is to call each person that signs up and get to know them. Ask them exactly what they're looking for. I think this helps when you're looking for properties and getting them under contract. Basically, you have a buyer already, you just need to find a property that meets their criteria.
My 2 cents. Best of luck!