please check grammar and sentence structure

I started study English January this year, at that time, I just watched the movie which spoke my native language. In contrast, I got used to watching the movie which spoke English. It is a kind of practice English. Also, I have some Korean friends who studied with me in January. Outside of the class, I chats or sometimes use phone call with them, and I talk to classmates.

In Korea, generally the students begin study English in junior high school. However, we study only grammar and a little reading, so studying abroad was hard challenge for me. I studied English speaking and writing for three months. Then, I arrived the U.S. Last quarter I studied in Level one. During the summer vacation, I went to the U.S. again and studied TOEFL. I just studied whole my vacation. This quarter, I would like to work on several specific reading, writing, and critical thinking skills. In TOEFL reading, I have been having difficulty reading the long articles.