Yes. The iPod Touch, the iPhone, and the iPad all use the same App Store.
Many apps will work on the iPhone, iPad and iPod Touch. Some are written just for the iPad while others only work on the iPhone and iPod Touch. Under the title in the App Store it will specify which devices the app will work on.
Yes
iPhone. iPod Touch. iPad.
yes go to the app store on your ipad or iphone or ipod
Yes. Easier than a Mac. Just as easy as an iPod Touch or iPhone.
If you have the iPod Touch 3G or 4G (current one), an iPhone 4 (not the iPhone 4S) or iPhone 3GS, or the original iPad (Not the iPad 2) then use redsn0w 0.9.10 to jailbreak. If you have an iPad 2 or, iPhone 4S, you cannot jailbreak it on iOS 5.0.1 yet
iCloud storage is only for storing files from your iPhone, iPod, or iPad devices.
You can use iTunes on your iPod or your computer to burn videos, songs, pictures, and apps (not reccomended) to your iPod/iPhone/iPad.
Depends what you want to use them for. The iPad is more of a computer, and can do so much more then the iPod. If you wanna just listen to music and play games, get an iPod.
Messages is used to communicate through text messanging with other iOS users (iPod Touch, iPhone, iPad).
I have added links to some useful software on the App Store that you can use to chat with other people using your iPhone, iPod touch, or iPad.