I think I should be very clear that this book is for beginners. I am a beginner. I loved it.
I've worked through all of the examples and they are explained clearly with a nice smooth difficulty progression as it goes along and really easy to understand drawings. The functions of the code are spelled out for you in detail.Best of all, it really sparked some ideas of how I can use sensors to perform unusual functions like using an ultrasonic sensor to change the volume of music.