Get User Name from Workspace Login

I have a process set up with a report and I would like to pull the user id and user name from the Workspace login. I am very new at LiveCycleES 8.0 and am having a tough time getting this to work. I have read a couple of different posts but need something more detailed.

Does anyone know of some Adobe documentation that is geared to beginners in LiveCycle? What about how to pull the user id and user name?

Thanks in advance!

John