How do you do that in a book? John Duckett's web programming titles (this book onJavaScript development and the accompanying HTML and CSS guide) do a fantastic job of this.

Whatever your reasons, it’s never been easier to start learning how to build websites from scratch than with help from HTML, CSS, & JavaScript All-in-One For Dummies.

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.