What type of programming skills or programs do I need for build ipod apps?

[Nas]

- How was facebook built too like with what softwares?
-Is there any free program to build apps?
-Any suggestion of any particular books for creating apps?

Thanks

[Justin]

In order to be able to write apps, you need to own a Mac, know C, and also know Objective-C. You can use Xcode to write apps, and that is a free download from Apple. Apple also has good resources for learning all about developing for their platforms, including learning Objective C. I don't recall if they have any resources for learning just plain C or not, but if they don't, such resources are easy to find.

A quick search will get you started.

[Bruce965]

1. You have to learn ObjectiveC and you must own a Mac
2. With Xcode that you can find on apple's website
3. Yes and no, Xcode is free but you still need a Mac and a developer's license (90$) or you can code WebApps everywhere in JavaScrits with softwares like this http://translate.google.it/translate?sl=...ge&act=url written by me.
4. No sorry
Hope you are satisfied and good coding