You can download the the Official Raspberry Pi Projects book for free. via raspberrypi.org
How to get started with your Raspberry Pi
Dozens of inspirational community projects
Essential guides and amazing ideas
Expert reviews and buying advice
Never-before printed pages from the first 5 issues
The Official Raspberry Pi Projects Book is freely licensed under
Creative Commons (BY-SA-NC 3.0).
You can download this book free now and forever, but buying in print or digital supports The Raspberry Pi Foundation’s charitable mission to democratise computing.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!