Hi everyone, I need your advice

Young couple travelling to the U.S. for study.
Will live in the New Jersey area for the next 4-5 years
Both are professional, Fluent English

I suggested to them that states in the middles of the map are less crowded and living cost is lower, but their decision was based on their career and choice of university etc.

Obviously, they should learn about rules and regulations.
What else?

They are familiar with most services, bacause they are similar to where they come from (road signs shapes and colors, 800 tool-free phone numbers ..etc. are all similar and familiar)

What advice would you give, and what should they be aware of.