How did you learn English?
Well, I am Israeli-born, but my parents moved to the United States when I was one year old until I was five years old (first to Dallas, Texas, and then to Rockville, Maryland, where I spoke English with the fellow children. However, after I returned to Israel at the age of five, the children there ridiculed me for my English, and, as a result, I did not want to speak it, and so forgot most about it, and just spoke Hebrew (which is my mother language).
After that, I had to regain English much more painfully as I learned it at school, and from other sources such as computerised Adventure games, books, films, Television shows, and the Internet. Shortly after high school, I felt that my English has dramatically improved. Nonetheless, looking back at my English text from a few years back, I cringe at how bad it was, and am still being told that some of my writing is non-idiomatic by some native speakers.