Some fun with iPhone development

As a way to stimulate my brain, I am developing my capability on writing iOS applications.  This should be fun because it is stretching my comfort zone.  

So far, I have successfully write a Hello World app and put it through an iPhone simulator.  Though it is much more difficult to get it run it on a device.  (Ask my fellow iOS developer.)

That will also mean I need to get myself fairly proficient in Objective-C.  I am confident that this will not be as difficult as Java.