1.  Which applications do you think will be best to create a trailer?  Why?
Personally, I would iMovie, because I am used to it, and advanced controls gives one lots more options when making movies.
2.  Which applications do you think will be the least useful for creating a book trailer?  Why?
I think that keynote would be bad, because its is a presentation app, not specifically to make movies.
3.  Do you already feel confident about using the application?  If not how much will you need to learn?
I feel really confident about iMovie, I have made lots of bass and guitar covers on there so I know lots about making movies with imovie.
4.  Do you think it makes more sense to choose an application and then start designing, or to design your trailer first and then choose an application to make it?  Explain.

I think its is better to choose an app first, so you know the limitations that the app has