I agree with Dimitris: you'll be fine with basic JS knowledge. Although I would describe the AngularJS learning curve as Ben Nadel puts it in his blog =) (which by the way is a great resource for learning a bit more advanced AngularJS) http://www.bennadel.com/blog/2439-My-Experience-With-Angular...

I can also recommend the screencasts at http://egghead.io/lessons to get a hang of the basic AngularJS concepts (site seems somewhat broken now however...)