ive only tested in chrome and im using the webgl renderer on the examples, ill need to write a fallback to the canvas renderer

since i dont wont to pay for a server you will have to download the code and set it up locally, the demos are just test with the physics engine ive been trying to write

"Secrets of the JavaScript Ninja" is the best book on javascript ive read, also look into require.js, and r.js for compiling, for server side node.js, the best editor for just about any language i could find that was free is komodo edit