John Mueller of Google posted on Google+ that it is “hottest new website technology” and that if you want to prepare for it, he recommended you watch the following three YouTube videos.
Here they are:
John added on Google+ :
You’re sure to hear a lot more on this topic come next year; if you’re a web-developer, you’ll almost certainly be asked about it, so check it out early on and think about where how it might make sense within the sites that you work on.
Forum discussion at Google+.