1.x
ETA: http://www.codecademy.com/learn/learn-angularjs "Learn how to build web apps using AngularJS 1.x. By the end of the course, you'll be able to use AngularJS to create powerful apps of your own."
[1]http://angularjs.blogspot.com/2014/10/ng-europe-angular-13-a...
I feel less bad about companies being screwed over by this sort of massive change - any tech manager/architect/lead who is researching what JavaScript stacks to choose for future projects should either already know about Angular 2.0 or have the available means to find out about it (and if they either don't or can't, they're basically just bad at the job they're being paid to do) - but for students, in any sense of the word, it's a different matter.