I was going to buy みんなのにほんご advance II and the exercise book at first but then I discovered 先生on youtube and knew he also written books. I immediately bought this one and the high level one instead of みんなのにほんご. Together with 先生's video I felt like I learned more in two weeks than in one year. The MP3 is also very good as it contains many conversations and sample sentences. I also like the layout as it leaves a lot of empty space for writing your own notes. The only reason I didn't give 5 stars is I was expecting more exercises but it has only 'translation' exercise for a complete sentence rather than some multiple choice or fill in the blank.