Chinese teachers tend to allude obliquely to some wonderful way that the characters relate to each other -- but this is the first book that I've seen that attempts to make this into a real method. You create little stories or mnemonics for each character, which then build into the next character, and so on.
UPDATE: It took five years to get around to it, but I have finally finished this book! At least in its capacity as a textbook or work book...it'll still be a useful reference for people even if you don't bother to finish it.
It's important to stress that this book is focused entirely on writing Chinese script, not learning useful words. The characters are arranged based on their radicals, which means you see certain connections between them.
You see even more connections if you bother to go through and write the pinyin in the margins, which takes DAYS. It's a crazy thing to do. But you have to be a little crazy to study Chinese as a second language anyway.