I had the pain of learning JavaFX by example code, following the compiler mailing list, asking people and if all else fails digging in the source. Finnaly there is a great article that has every thing you need to know to get you started with the language in one easy to read page:
Experiments With JavaFX Script
by Weiqi Gao, Principal Software Engineer
Its highly recommended reading and I wish it was around when I was learning JavaFX. Its in by bookmarks bar for quick reference every time I can’t remember a bit of syntax. Hope it helps you to.