Verb conjugation of "assuage" in English

Good luck and success in this new job. Please tell Anna that this morning I had a great Capuchino coffee and I had to think of her. The aroma reminded me of our vacation in Northern Italy.
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 want learn Spanish because of my girlfriend from Guatemala. She is from Latin America. And of course I want improve my grammar too. I like to hear it, but speaking is still hard. Hasta Luego.