in an almost total lack of official documentation so far, I've tried to put together a series of brief tutorials on simple topics (regarding HTML Panels in Photoshop) - code is both from personal research and forums, etc. Each Tip shows an actual example.
You can find the whole list here - as follow for your convenience.
Tip #1 - Debugging
Tip #2 - Including multiple JSX
Tip #3 - Get data from JSX and send it to HTML
Tip #4 - Passing Objects from HTML to JSX
Tip #5 - Passing Objects from JSX to HTML
Tip #6 - Integrating Topcoat CSS library
Tip #7 - Photoshop Events, Take 1
Tip #8 - Photoshop Events, Take 2
Tip #9 - Panel Persistence.
I'll try to add things as soon as... I discover new things.
Hope this helps!