This is the second volume of a very good chinese book. As its own name suggest, Easy Chinese is a very easy and self paced book to follow.
The lessons are very well formated and facilitates self learning people to quickly gain confidence on speaking mandarin. The audio files are very clear, very comprehensible and can be listened with or without the book. I suggest both!
If you're really interested in learn chinese I recomend this book as it's a fast way to get there, but don't forget to start with volume one.