If you only want to know the basics of P&S, then you'll be fine with looking over the Prototype documentation and script.aculo.us samples. However, regardless of how deep you want to go, you should definitely check out the freely available source code for the book available on the book's website.
- AdvancED DOM Scripting: Dynamic Web Design Techniques by Jeffery Sambell.
- script.aculo.us Website
- Blog Entry on Prototype and Scriptaculous
Well, OK... there is no comment section. It's not that I don't care what you think, but we all know that one guy in the office who feels the need to peek over the cubicle to contribute unsolicited "help" every time someone says anything about anything and who who feels the need to express himself every time something looks different and gets offended anytime someone expresses discomfort at his constant intrusion and who thinks all his "interesting traits" makes him a "team player". I don't care what HE thinks. He's not welcome here.
Follow me on Twitter instead. Comment there. @netfxharmonics