Great b00k on X3D!!!!!

x3dgraphics

Building and interacting with 3D graphics is a "hands on" experience. Throughout this book there are lots of examples to study and modify. Practice helps you learn how X3D works, and assists you in building your own projects.

X3D: Extensible 3D Graphics for Web Authors (The Morgan Kaufmann Series in Interactive 3D Technology)

The book presents the essential ideas needed to understand how an X3D world is constructed. Book chapters build upon each other, progressing from simple ideas to sophisticated concepts.

http://www.x3dgraphics.com/examples/X3dForWebAuthors/

X3D: Extensible 3D Graphics for Web Authors assumes that you are interested in learning more about 3D graphics. Some experience with other Web technologies (such as HTML or XML) is helpful. No prior programming experience is needed.