Tutorial / Overview?

I just downloaded MyGUI 3.2.0, compiled it, and integrated it into my Ogre project. So far everything is fine.

Now, this may be a dumb question, but is there some place that has a good explanation of all the components of this system, and best practices for using it for making UI for a game? I've looked through the following pages:

http://www.ogre3d.org/tikiwiki/tiki-ind ... page=MyGUI
http://www.ogre3d.org/tikiwiki/tiki-ind ... GUI+sample
http://www.ogre3d.org/tikiwiki/index.php/MyGUI (appears deprecated?)
http://mygui.info/docs/index.html

and I've compiled and can run the examples and tools, but the explanations on the previous links seem pretty bare and I feel like I am hunting blindly a little bit going through the sample code and trying to wrap my head around how everything is laid out. The tools look like they have nice docs with them, but they aren't in English.

What I am looking for, I guess, is something that just gives an overview of all the components. Like where you define widgets and layouts, what components go in what files, best ways to handle transitioning between multiple "screens", or if MyGUI has the concept of screens, what to use the tools for, what to do by hand, etc. I am NOT looking for answers to those specific questions, those are just examples. I am just wondering if there is some digestible overview of the system.

Thanks for any help!