HTML5 and WebGL getting started

Here are some links I found on HTML5 game engines and WebGL

http://impactjs.com/ - HTML5 game engine, payable
http://www.melonjs.org/download.html - HTML5 game engine, open source
https://developer.mozilla.org/en/docs/HTML/HTML5 -  HTML5 on MDN
https://developer.mozilla.org/en-US/docs/WebGL - WebGL on MDN

http://www.ibm.com/developerworks/library/j-html5-game6/