CSS and JS are the same whether you're using them with Quest /Squiffy or whatever. I wouldn't worry too much about looking for specific tutorials like that.
I've been playing around with Squiffy for a couple of months now, developing my own engine that sits on top of the core functionality and I'm hoping to use it to create some hybrid text / graphical games.
What's great about Squiffy is that it provides all the basic functionality I could ask for, allowing me to focus time and effort on additional more advanced stuff. It's also pretty compatible with any modern browser, and with a bit of tweaking even works well on mobile browsers.