Grammer is essential to learning any language. I have summarized what I have been teaching over the years. In this book, how to read, write and speak Korean, sentence types, word orders, tenses, politeness, time and number expression, parts of speech are all covered. This is a great book for you to learn practical and essential Korean lanuage. This is not a self study book. You need live online classes with the author or watch his video lessons and complete drill practices. Watch his sample videos on YouTube and get this book for full explaination.