HTML5

Here are a bunch of resources related to HTML5:

To run the very latest stuff (like WebGL 3D animations), you'd want to get a developer version of a browser such as Firefox or Chromium (but the latest regular releases of Firefox and Chrome run basic HTML5 stuff just fine) []

book in progress []

presentation []

demos [] []

tutorials [] [] [] []

browser-based development environments, processing [] [] [] [] []

And here's a blog post about java, flash, html5: []