Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One criticism of an otherwise excellent series

I have been studying this series in class and privately for 3 + years now, and I am currently in book 4. The only wish I have is that I find the use of mainly a caligraphy-type font, while visually attractive, makes learning the characters a little harder, because many web sites, and newspapers use a different more "square", block style font. For me, it makes learning the characters harder, because one is more likely to run into the other style font on public signs ( I was in China for 20 days last summer) and in newspapers.So, if I were to redesign the book, I would mix up the style of the fonts to help the student get used to learning the characters as they appear in a variety of fonts.Otherwise, this is probably the best set of books for learning with a teacher or in a class. Also, the DVDs are excellent and well worth getting along with the CDs.