Translation of logística

I learned Russian during 8 years in highschool, but since I left school 6 years ago, I have forgotten most of it and did not have opportunity to speak or practice in any way. That's why I am on Vocabulix.
Please explain me the exact differences between British and American .... This year I'm trying to make the TOEFL. We can then discuss how we can prepare for this exam. I failed the first time.
I hope there were not too many mistakes here. I have learned Spanish not a long time ago and I am still very insecure! Tell me please, where do you come from and what you do?