3 questions I can not find the answer to !!!!

[Ricky Tann]

Hey guys quick question i may be having a blonde moment but.. 

I'm starting my investing journey by purchasing an LLC in which my hopes are to assign it to an end buyer through bank foreclosures. My first question is, Is it true that the deposit can just be a copy of a check in the company's name and not an actual check ? After I flip my first property using that LLC do I have to come up with a totally new name for the second LLC ? And my third and final question is that I read in order to prevent a double closing one would have to sell his LLC before the closing date but isn't the process of me and the end buyer agreeing to terms and signing an assignment contract considered selling it already ?

Thank you any feedback would be very appreciative as I am a hungry newbie investor ready to sink my teeth in and learn whenever I can