For the past several months I have been building XFroms prototypes on my current project. I ran into the XForms Firefox plugin two months ago and have been using happily using it ever since. Although the plug-in version number is only "0.6", I have found for my use, it works perfectly. It allows me to quickly test XForms on all the computers I use and I don’t need to setup and configure a web server. The extension takes under 30 seconds to install, but you will have to reboot FireFox once after you download the extension.
Now biggest thing that I am searching for are XForms example programs. The examples provided with some of the books are not very good. I would like to use these samples XForms and teaching XForms to others. I would also like to create XForms directly from the XML Schemas I am building and so I can integrate the hints, help and metadata registry links for each field on the forms I am developing. I am also trying to figure out how to make CSS work correctly across many browsers since many of the XForms CSS templates in the books use CSS3 and CSS3 only works correctly with FireFox.
If you know of any nice collections of XForms for learning XForms, please let me know. I have set up a Wikibook to start collecting tutorials and examples. The link is http://en.wikibooks.org/wiki/XForms