I dont really know what that is so how do i get it and how do i send it? Im trying to buy something from someone and i dont want to send just the cash so i heard on the money order. so what do i do? can i just put cash money on it or do i have to debit it? Please describe everything i need to do. I really dont know how to do this.Thanks. HALSAW!!!.--Answer1:You can get a Postal Money Order (the safest kind) at the Post Office. Youll need to pay cash for it. The clerk there will explain how to fill it out.