Get links to lots of related resources at http://zomigi.com/blog/responsive-layouts-presentation.
In this presentation, you'll learn about two of the core components of responsive web design: fluid/liquid layouts and media queries. I cover fluid and hybrid fixed-fluid layout techniques, tips, and tricks so that you can build robust, flexible layouts without pulling your hair out. I then walk through adding CSS3 media queries onto a fluid layout to make it fully responsive to a variety of screen sizes and devices. Even older versions of Internet Explorer get some love with solutions to help them deal with your shiny new responsive layouts.