This is a fantastic form to help to the community, make to this area with the package RecordMyDesktop , with this aplication you can make amazing videos and you can help to other people to learn across videos.
This a good idea for the new people that think help to Ubuntu Community,and if you speak spanish is better because the spanish speakers need help
All my contributions at ScreenCastTeam are in ogv formate and they are explain in spanish.
List of ScreenCast
You can see more information about the package Record My Desktop