Huge recommendation:
The AI Revolution: The Road to Superintelligence by Tim Urban
He goes form “as soon as it works, no one calls it AI anymore” all the way up to “I hope you enjoyed normal time, because this is when this topic gets unnormal and scary, and it’s gonna stay that way from here forward.”
http://waitbutwhy.com/2015/01/artificial-intelligence-revolution-1.html
Part two is on its way…