Yonsei TextBook

I might not have enjoyed the Yonsei KLI experience, but the text books I have to admit have greatly improved.  The layout and graphics are really excellent, and the content is reasonably well organized.  There's still some potential problems or criticisms I have, such as lack of sample sentences to discern word usage, and limited dialogs, and poor explanations in English.  For the Japanese version of the book, there were some mistakes in Japanese, which are typical of beginning learners of that language.  Well, so maybe the book is an unpolished gem, has a lot of flaws, but beyond that it is good.

Personally, I use this book as a supplement toward other material I have, such as books from Sogang University.  This helps identify material I am missing at beginning levels and reinforces material I know already.  I am also less surprised at material presented in TOPIK sample tests between both Yonsei and Sogang text books.