As a French speaker, I'm not only a native but an experienced teacher. I taught for years in Korea and in Canada. I was born in France but moved to Canada in 2009 and had the opportunity to leave 4 years in Seoul. I'm used to teach different students each with its own difficulties. It's important to choose your teacher correctly and to not only pick someone who can speak the language but choose your teacher in function of his or her experience. Your needs as a student have to be fulfilled and you need to feel comfortable. Grammar is a fact but speaking is also very important...