How would I ask for a wholesaling contract?

[Toby Bounnarpha]

I did some networking and met some investors who buy fixer uppers. They told me I could do wholesaling. When I'm meeting with a seller, and we have negotiated a price on the property. How would I ask for a contract for wholesaling. What should I do before I recieve a contract? What should I do after I recieve a contract? ( Go to a lawyer ) How do I sell my contract so I don't get ripped off? Do I ask for cash or a check? Do I write my own contract for a proof of purchase that the buyer has to sign, to get my deal?