Help me on this one...

Hi guys, I have a question here...I am looking to buy a car from a private seller and the car I'm interested in is a '99 lude 44k $11,999 and I have a car to sell which will be about $3,000 worth.I needed to know if you know of any good loan companies and do u know of any that will let you loan money without a credit history??Which are the best loan companies...
Basically I just want to know from any of you out there that have bought from private sellers!!!!
How does it all work and is it as difficult as it seems to me?!?!?
Thanks.