iPod apps are made to play on an iPod and will not play on a computer.
As long as your computer has itunes that is authorised on the same itunes account as your iphone, then it will automatically transfer all your iphone apps onto the computer
no
You can get free apps without a computer for iOS 6 or 7, however you can not get paid apps for free.
with the ipod plugged to your computer open itunes and go to File/transfer purchases even if the apps you have are free
Connect your iPod to your computer and sync it.
To download free apps from your computer to an iPod Touch, first install iTunes on your computer and sign in with your Apple ID. Open the App Store within iTunes, find the apps you want, and click "Get" to download them. Once the apps are downloaded, connect your iPod Touch to the computer via USB, select it in iTunes, and sync the apps to transfer them to your device. Make sure to keep your iPod Touch updated to ensure compatibility with the apps.
itunes will back up your apps when you sync your iPhone if the computer is authorized (store-authorize computer in itunes).
Men
check for available downloads or download them individually
Apps is actually an abbreviation of the word applications. So the people who created "apps" were the same people who created computer programs.
no because you need a laptop or a computer to download the apps