app development

Construct simple, free-download golf instruction app consisting of five 2-minute videos. I would supply the videos. The interface would simply be the name of the app with a logo (I supply) and five buttons. When selected each video would simply download and play and then revert to the initial interface when done playing. I would like to have the app to have low-key, in-app advertising. I would also need some hand-holding on how to get the completed app on to iTunes and the like.