Responsive design is not only a new technique — it's an entirely new mindset. This eBook, "Responsive Design" (eBook #23), provides an overview on responsive Web design, showing many situations and techniques in which this approach can be applied to. Smartphones, tablets, laptops and desktop computers may share the same design, which is adapted according to screen size, platform and orientation of each device.
Learn about content prototyping, device-agnostic design approach, gracefully degrading media queries and navigation patterns to achieve flawless responsiveness. Choose the right approach to a responsive project and avoid some common mistakes — it's worth it!
Not a bad book, over all pretty good but I'd of called this book "introduction to responsive web design".
I did learn a few tricks but having been working with bootstrap for over a year now, and playing with other lightweight grids, most of it I skimmed. I picked this up as part of a smashing bundle, an nice additional but not quite worth $5 on its own.