What we have here is probably the oldest written work in continuous use in the history of the human race--something on the order of 3000 to 5000 years! Confucius spent a major portion of his life studying and annotating it (unfortunately, much of his work has been lost), and it has been a source of advice and guidance to sages and rulers in the Orient throughout that time.
You may have heard that it is used in Chinese fortune-telling, and it is--but not in the Occidental sense of that term. Without going into lengthy explanations, let me just say that the Chinese hit on an understanding of--and a way of practically applying--Chaos Theory, thousands of years before Western physicists coined the term. As to whether or not it "works", I can attest that it does. But don't take my word for it--try it yourself!
There are many different translations of this work--so why choose this one? This particular edition is not just a translation, but a transliteration. Richard Wilhelm worked closely with a leading Chinese scholar to make sure that the work would be comprehensible to the Occidental mind. And believe me, the ideas involved do not readily translate into any Western language.
To make sure that these ideas could be truly grasped by Westerners, the editors translated the work from Chinese into German, from German into English, and then translated the work from English back into Chinese, thus ensuring that the ideas survived the transitions intact.
Unless you were raised in the language, customs, and culture of the Orient, this is not just the best edition, it is the ONLY edition. This is indeed one of the greatest works of philosopy and literature ever produced by our species. Needless to say, I highly recommend it!