Hello Klaus,
thank's a lot for your detailed feedback. I will certainly take it to heart and improve the documentation and maybe add some tips and/or graphical hints to the application. Possibly rethinking things along the way.
I just wrote a short quickstart guide and added it to the project page at
Pader Sync - Mobile File Manager for BlackBerry, Java ME and Android
This should give an understanding of how to navigate and prevent other users from getting lost.
Best regards,
Thorsten.