If you have access to partnersource which I am assuming you have, you can try the following course:-
80547AE: Extending Microsoft Dynamics CRM 2013
I haven't taken this myself but I can imagine that there wont be much about dialogs in this as they haven't changed much. It may have covered real time workflows.
Hope it helps!
Regards, Abhishek Bakshi If you find this post helpful then please Vote as Helpful and Mark As Answer. Check my blog on https://mydynamicscrmblog.wordpress.com/