Decision about the iPhone

I decided to get an iPhone but will wait until the Christmas break to get it. I am sure that there is a learning curve on how to use it. Since I will be off from work from December 25 - January 3, I will have time to learn how to use it. I assume that some of the apps come loaded with the phone when it is purchased while others must be downloaded. If there is anyone reading this note with an iPhone, I would appreciate any advice. Joe Murphy, how about you? I will also have to teach my wife how to use it. She is not very tech savvy.