Julie Cameron introduces Syntactically Awesome Stylesheets, a CSS meta-language and precompiler, covering nesting, variables, mixins, inheritance, directives, gotchas, tools, extensions, and tips.
Kevin Lamping presents patterns for writing CSS for very large websites.
Greg Wilson and Christophe Coenraets demo Adobe Edge, a motion and interaction tool, CSS Regions and Shaders, and PhoneGap.
Dave Johnson introduces PhoneGap: how to write apps with it, the existing community, an API overview, extending PhoneGap, tooling, libraries, and an argument on web vs. native apps.
Mark Volkmann introduces CSS3 and Sass, a tool extending CSS with variables, selector nesting, mixins and selector inheritance, the resulting code being converted to regular CSS before deploying.
Wesley Reisz explains HTML5, demoing some of its most important features and highlighting some of the obstacles he met while working with it.
In this presentation from Strange Loop 2010, Michael Galpin discusses developing mobile web applications, HTML 5, WebKit, ACID 3, PhoneGap and Appcelerator, Viewports, geolocation, DOM storage, Web Workers, Web Sockets and server-side data pushing, Canvas, CSS 3.0, application cache, the Device API, touch events, video/audio, meta tags, and support for each of these on assorted mobile platforms.