International Drivers License/Permit
Most cities in the US do not have a good public transportation system, hence you need to borrow, rent or buy a car to move from one place to another. An international drivers license/permit would allow you move around for sometime before you get a proper driver's permit.
Get those Academic Transcripts!
You must have Your Secondary /University Transcript of Records. Especially if you plan to either school or work in the US. Request it from your University Registrar. Try to request as many copies as you can. Then have them evaluated by Credentials Evaluation Services. The CES is a government approved organization for those who are educated outside the United States but want to pursue further education in U.S. institutions of higher learning or work with their credentials.
Take the Approved English Language Proficiency Examinations
If you want to further your education, then you must have passed the standard test language tests. There are three sets of approved exams
(1) Test of English as a Foreign Language (TOEFL) plus the Test of Written English (TWE) and the Test of Spoken English (TSE);
(2) the Test of English in International Communications (TOEIC) plus TSE and TWE
(3) the International English Language Testing System (IELTS).
Unlocked Cell Phones
Most cell phone companies in the US sell locked cellphones. Although you can buy unlock codes and phones when you get over there, it is sometimes better and cheaper to buy in Nigeria before you travel out.
An Adapter for Your Various Electronics
The voltage in America is 110 while in Nigeria its 220/240. But now that’s not really necessary since most electronics such as cell phones, iPads, tablets, laptops and cameras, all have the capacity to accept both types of voltage. All you need now is just an adapter with different plugs.
Photos and Contact Information of Friends and Family
When you get to miss your loved ones, you can easily check the pictures and contact them.