Outstanding
This is an outstanding typography reference. For use in Japan, it would be useful even for a non-native speaker of English, in my opinion, because of the large amount of poor typography you see when out and about in Japan.
日本には英語のTypographyの悪い例が多い為、日本のデザイナーさんにも役に立つかと思います。分かりやすい説明が主ので、ある程度英語力が必要、ですね。
Rick Cogley about
The Typography Manual