Double Closings/Assignment contracts

[Brian Wheeler]

Does anyone have experience with Double closings and how they work? I get the overall gist of it but I am confused on a couple of things. 

1.) How do you setup or use both contracts for the transaction ie. the contract for you and your seller then to move it over to you and your buyer?

2.) Since I am owning the property for only a couple of minutes what are the taxes and fees I will incur?

3.) Does anyone have any assignment contracts for purchasing the property as well as selling it? do these contracts work for both assignment and double closings? 

Thank you,