Wholesaling has two main methods of operation, as I understand it.
1. Purchase a home outright at a low price, usually with cash, from any source (FSBO, MLS listing, auction, etc.) and then without improving the property immediately sell the property, usually to a real estate investor (but not always).
2. Find a property and negotiate a low price for it with the owner. Once the offer has been signed you now have the property under contract. When you made the offer to buy contract you included language that gives you the right to "assign the contract" at or before closing. So now, before the date for closing) you have to find a buyer (or you already had one lined up) that will pay more for the property than the property owner agreed upon. BE WARNED: if you fail to assign the contract, you are likely contractually obligated to purchase the property on or before the closing date. (Always consult a lawyer, I'm not one ๐)
As you can see, wholesaling is not easy nor simple. If everything doesn't line up perfect, you can be stuck with a property that you hadn't planned on owning for very long or at all!!!! Though, if you are well connected in your region with other REIs and experienced with real estate sales, it could be for you!