Knowing already spoken Cantonese, this book allows me to learn traditional Chinese characters and the Jyutping romanization that fills the gaps of Yale. Note that this is not mentioned in the description or on the official website but only on sites that advise and in the course book. This method allows to learn as and when new words and constantly reviewing them (in other cases). The only negative I find is that from lesson 21, there are only two out of the three proposed initially. The third is to listen and read the characters without their transcription Jyutping. Which me personally idle in the storage thereof. Due to lesson 60, the proposed vocabulary is enough for daily use. I think that the lesson 100, vocabulary and refine advantage will be complete enough to get in several topic of conversation. I saw that there recommends sites to complete his apprenticeship once the finished book. And of course, it contains a dictionary at the very end, including all the words seen during the various lessons.