This is a good video to see a more relaxed candidate Trump without the confrontational tone generally inherent in national punditry broadcast.   Trump covers a lot of material within the questions, and you can see how he is able to communicate comfortably.

One of the aspects I took away from watching this was a stronger belief he really is in this race to win.  This is not Trump promoting Trump; this is Trump conveying he really does want to do this specifically to make America Great Again.