Make sure the seller has cleared the lien before you go. Locate the closest DMV and go there with the seller to transfer the title. Most states will give you a temporary registration/title for your trip home. I did this when I bought a truck in Colorado...that way I knew the truck was mine (title in hand under my name) prior to leaving the state.
1994 D-90 ST #734
1997 Disco I
1988 Range Rover 40th Anniversary
1999 Disco II
1995 D-90 ST #2731
1997 Range Rover 4.6 HSE Vitesse
2003 Range Rover HSE