I haven't been to the US since I was in elementary school, so
basically all I can give you is some tips on American language.
Dozen = 12
Also, "drink driving" as it's known here is known as "drunk
driving", DUI (driving under the influence), or DWI (driving while
intoxicated).
Plus, I'm sure you know that many words have an American
spelling. For example: color, favorite, criticize, realize, center,
theater, ton, etc.
Also, an "inch" is roughly 2.5 cm. A "foot" is roughly 30
inches. A "yard" is roughly a meter. A "mile" is roughly 1.6
km.
LOL, I don't know if any of that helps.
Another thing: if you want to use your Singapore cell phone in
the US, you have to sign up with either AT&T or T-Mobile.
Sprint and Verizon use a different technology (CDMA) while AT&T
and T-Mo use the same as Singapore (GSM).