The combination of book and cassette does not work in this case. It is very difficult to match your place in the book, and the cassette. The book in the first chapter tries to explain too much and does build step by step, but just throws the information at you at fast rate. I was disappointed with the cassette, I was hoping to use it in the car. The cassette can not be used with out the book, and does not lend itself for learning conversation. An example of this is when you are introduced to the numbers up to 20, you are told the numbers once, there isn't a pause after the numbers so you do not have time to repeat them. Then you are straight on to another subject. All 20 numbers are said in about 20 seconds.