I think so. The app is compatible.
yes the ipod touch 2g does come with the apps store as well as iTunes store
You download it via the App Store. the App Store application is already on the iPhone
I don't think so, must be a later generation iPhone. But there could be a way to do it on the cydia app if your iPhone is jailbroken.
In the app store. You can get into app store by plugging your iPhone into your PC and open itunes or just tap on the app store icon in your iPhone, but you have to have wifi to buy apps wirelessly.
im not sure
Altough there is no radio application on the iPhone, you can download it. with the "App Store" program in the iPhone, you can download an app that gives you the opportunity for listening to radio.
Yes, there is an Answers App for iphone in the apple store
Download installous on iPhone (In the IPhone Store)
There is a way to JailBreak your iPhone to make it run the third party app store.
Go to the app store on your iPhone and search for it.
Angry Birds