Angular is agnostic of the back-end. Just use the $http service to read/write async from the server. The angular model is whatever your model is - there are no restrictions
I understand that, but an application isn't an island; presumably a server that speaks JSON is easiest to deal with, and there are probably a number of gotchas on "how best to build a backend that works the way AngularJS works well". I've not found anything like that yet and I'd love someone to point me to it.
OK I get you. The angular-app [1] is a full stack app with angular front-end, node back-end. It's not a walkthrough but you could certainly read through the code