I first saw a wall-full of this series at Kyobo Book in Seoul in July, '04. I bought one copy, came home, and worked to order the full set of thirty booklets, workbooks, and audio cassettes from the publisher. Each set ...

I first saw a wall-full of this series at Kyobo Book in Seoul in July, '04. I bought one copy, came home, and worked to order the full set of thirty booklets, workbooks, and audio cassettes from the publisher. Each set ...

I first saw a wall-full of this series at Kyobo Book in Seoul in July, '04. I bought one copy, came home, and worked to order the full set of thirty booklets, workbooks, and audio cassettes from the publisher. Each set ...

The set of materials sold for 9800 Won includes the twenty-eight page colored booklet, a monochrome workbook, and an audio cassette. There are thirty such sets in the series. I can remember being overwhelmed when I saw ...