Once you make the videos you can edit them to make the video how you want.
After you are completely done you can share them with people.
With iTrailer you can make awesome movie trailers.
In iTrailer you can put in pictures and little video clips.
The only picture you get to put on a slide is the background.
You can share it with people after you are done with it.
You can also talk while sliding through the slides explaining.
While talking you can draw to show what you are talking about.
The people can talk but only one person per scene.
You can make the people walk as well as dancing and lots of other stuff.