Responsible Responsive Design
A companion to Ethan Marcotte’s Responsive Web Design, Scott Jehl’s Responsible Responsive Design is a required read for front-end developers who want to make the web more accessible and faster. Because of his expertise on web performance and his experience in working in places with limited access, Jehl explains clearly the important of delivering images, CSS and JavaScript without blocking the contents. Even though this one is brief, as with all the books from A Book Apart, Jehl was able to pack all the technical details you need to know to make a better, smoother user experience across networks and devices.