If you have a iPhone or iPod touch. You may install many apps form Apple App Store. It's very interesting and challenge a little bit [1].
When you enjoy these apps. Have you ever thought that you can try to develop some apps or games by yourself. If the answer is YES or you did it. Congratulation!!
Now, there is a good free iPhone Application Programming by Apple & Stanford. you can download the videos from Stanford on iTunes U and visite the CS193P iPhone Application Programming class by Stanford. Enjoying and try to do some interested apps!!!
- You can use AppSniper to track apps form app stroe on your iPhone or iPod touch. Or, you can visite AppShopper.com that you can track apps on web too.