Make: Sensors is the definitive introduction and guide to the sometimes-tricky world of using sensors to monitor the physical world. With dozens of projects and experiments for you to build, this book shows you how to build sensor projects with both Arduino and Raspberry Pi. Use Arduino when you need a low-power, low-complexity brain for your sensor, and choose Raspberry Pi when you need to perform additional processing using the Linux operating system running on that device. You'll learn about touch sensors, light sensors, accelerometers, gyroscopes, magnetic sensors, as well as temperature, humidity, and gas sensors.
Slightly more readable than datasheets without any really new information - this is basically just a book of pinouts for different sensors and a couple of "projects" that aren't particularly involved (e.g. use a ping sensor and a buzzer to beep whenever it detects you standing too close to a screen)
If you purchase this with a kit, it seems like a very good tutorial book. If you get this at the library and happen to have some of these parts, this will likely prove easier to read than the datasheets for those parts, and you can skip everything you don't already own. If you find this in a bookstore, you should consider just using tutorials on arduino.cc
If you're into electronics and need some memory refresher on sensors, arduino and Raspberry Pi, this is good read. Examples are a outdated for the Raspberry Pi but if you know your way through Python, GPIO and stuffs you won't have a problem porting example codes to newer version.
I don't know what they're teaching in Finland today, but I like these authors and their sense of curiosity. Good on them for writing this book!
This book is what makes the Maker movement kick some tail. "Make: Sensors," covers both Ardunio and Raspberry Pi connections, coding, layouts. I was happily amazed at what I got when the book arrived in the mail. I knocked down another Make: book due to lack of color diagrams... well, Make: Sensors has those color Fritzing diagrams to show the layout connections.
The only downside (if you can call it that) is the price. If you want it, get it. If you've got a cursory interest, rent it perhaps or take a gander at the bookstore.
Most (if not all) of the projects will require sensors or things that cannot be readily obtained at your local electronics store. If you want to do the projects, you'll have to get these components.
Bottom Line: if you want your Arduino and Raspberry Pi projects to "sense" the real world, get a good start by getting "Make: Sensors."
Reasonable coverage of a broad topic. All of the projects are build-able, the code examples have separate comments which are pretty useful. A good beginning book.