I know that when almost every one finds a new thing, mostly wants to just play with and get to know "ok, it's handy enough, let's use it!".
This page is designed for this purpose:
Fast first look on the program.

Requirement
- .Net compact framework 2.0
- Windows Mobile 5.0 or higher (may work under lower versions but I haven't tested, if so please inform me in comments on this page).

Installation
First go here and download the proper package.
For the moment there is no installation, I haven't made a cab file and you have to copy the program to your phone and run it!
Run WMPauker

Opening, Repeating & Learning!
Just after program start up, you are presented with a open choice between new files and opening recently used files (this latter is no currently working).
After selecting a file in either ways, click "Go" under the related way and wait until it fully loads.
Open a lessen
Lessen Overview

For starting the repeat process, when ever you have some expired cards in baths other than "Not learned", "Ultra short term memory" or "Short term memory", you have to select the related bath from the Learn > Repeat expired cards menu.
Repeat expired cards

For learning new cards (cards contained in "Not learned", "Ultra short term memory" or "Short term memory") you most do the same from Learn > Repeat new cards menu.
Repeat new cards

Conclusion
There are much more things that you will learn while working with the program.However I mentioned the most important features here.