Answer to "Where can I buy a charging cable for my iPod"The Apple Store is the best place to get things like that...
Answer to "Is this a battery leak?"Yes, you will probably have to replace the battery and any components that have been damaged by the leakage. It looks at though the battery acid has dried up.
Answer to "Camera not working in camera app, but working in facetime and snapchat"Look above at the other answers and they tell you how to fix it Hard reset your device