You may not have access to wal-mart, but don't you have ASDA over there? They are owned by Wal-Mart. They should have a map, just go there and look in the book section.
Driving etiquette, hmmm. If you have to ask, it's best to take the bus.
Stay on the right side (duh) and avoid the semi's, they drive their rigs like sports cars, and when somebody cuts you off and then waves at you thinking that you just let them in, a simple obscene gesture with the middle finger will suffice
have fun in the states.
And all at once the crowd begins to sing: Sometimes the hardest thing and the right thing are the same