Angular Guides and Docs
Official Angular Tutorial
While not especially easy to follow, this tutorial for Angular has a ton of great information in it.
One of the fundamental pieces of Angular is Dependency Injection. Understanding how it works is a necessity for any serious Angular Developer.
Plural Sight: Angular Fundamentals
A Plural Sight subscription isn’t cheap, but this video series is great, and they have a free trial that will get you through most of it.
Code School: Shaping up with Angular
This subscription service offers a free trial and is a great interactive introduction to Angular.
Angular TODO MVC
A Better Way to Learn Angularjs
This is a great, easy introduction to Angular with links to more in-depth resources.
Videos and Podcasts
In this specific podcast, Misko Hevery, one of the original developers of Angular, focuses on Dependency Injection, both in Angular and as a general pattern.
Egghead contains both free and subscription-based, “pro” videos on Angular and many other web development tools.
Books and More
This is the most comprehensive book on Angular that I’ve found. It’s a little pricy, but the tiered pricing structure has additional resources available.
This GitHub repository is full of links to more great Angular.js resources.