Kyle
You can build a buyer’s list by contacting all those “we buy houses” signs & ads in the newspaper you see all over town. Keep in mind that many of them are wholesalers like you and not the kind of buyer you are looking for but some will be buyers for your deals.
Foreclosure auctions are full of cash buyers. You don’t want to bother them before or during the auction. But you can collect biz cards after the auction.
Run ads on craigslist that you have wholesale properties and want to build a list of interested buyers.
Once you get 5-10 people on your buyer’s list, it’s time to start looking for wholesale deals.