Here is a basic overview of iOS 7. The update is available Sept 18 for iPad mini and iPad 2 and up. These videos are intended for those who need a clear simple walk through or some exposure to the new look before updating.
A simple overview of some of the changes to Apple apps; clock, calendar, reminders, contacts, and notes.
And here are some more Apple apps; camera, photos (editing with filters) and maps (walking directions)