This is a collection of resources about ui-router, from simple to more complex.
ui-router project on git
https://github.com/angular-ui/ui-router
Intro video to ui-router (5 mins)
https://egghead.io/lessons/angularjs-introduction-ui-router
Another intro video to ui-router (first 15 minutes).
A great article about ui-router (more indepth)
http://www.ng-newsletter.com/posts/angular-ui-router.html
In-depth video about ui-router (50 min) + with http://slid.es/timkindberg/ui-router#/
Related Resources
One way to setup authentication in AngularJS
http://blog.brunoscopelliti.com/deal-with-users-authentication-in-an-angularjs-web-app
Builds on the article above, but using ui-router
https://medium.com/opinionated-angularjs/4e927af3a15f
If you have additional suggestions, let me know and I will add them here.