Looking for a good tutorial on interactive articles

I really love the style of interactive article that is increasingly appearing in different places on the web, most recently in the Guardian’s summary of the Snowden news. It’s a really engaging mix of video, text and other content, and I’d really love to know if anyone has published any how-to’s on making pages like this. In particular, things like cueing the videos to run at the right time and other effects must surely be a headache?

An example of what I mean is up at:

And I would love if anyone has any pointers on where to look for advice on making similar types of news content.