Here are two great webinars (recordings) to learn about JavaFX as well as how to use JavaFX in the enterprise:

JavaFX: Rich Internet Experiences (by Jacob Lehrbaum, Sun)
JavaFX: Serving the Next Billion
Introduction to JavaFX platform, script and more

Enterprise JavaFX (by Max Katz, Charley Cowens, Exadel)
Build RIA Applications with JavaFX, Flamingo and Seam
This webinar demonstrates how to connect JavaFX to enterprise back end, in particular to Seam.