This book is not for beginners. This book instead aims for the lower-intermediate level of learners, namely, those who understand very short and easy sentences from K-drama; those who can converse in Korean slowly but with frequent mistakes; those who can make simple sentences in Korean but with less confidence; or those who do not consider themselves a beginner anymore but clearly need to study further.
This is the first book of 하나하나 한국어 series. You can use recorded video lectures from the website (