I believe I can give you effective Japanese lessons. I have many friends from overseas and I have helped them to lear Japanese. I am working for a chemical material company selling its product all over the world. I often go overseas on business. That is why I can speak English in business level although I have been living in Japan almost entire my life. I can teach you Japanese not only in Japanese but also English with an experience of Japanese business and as a good English learner.
I can help you learn Japanese conversation.