I had an opportunity to study in the USA. It was necessary to quickly pull up English. On the recommendation of my colleague I booked an intensive English course in Sprachcaffe Miami Language School, which I never regretted.
The school load was serious (6 hours per day), but the result was worth it. I was able to overcome the language barrier, to update my knowledge of English, and I got an essential experience of communication in an international group. This helped a lot in the internship at the main office of the company where I work. I recommend the school!