Yeah. Enabling unknown sources is pretty safe as long as you only install apps from trusted sources (like amazon).
Once you install amazon, dont install anything else from your browser unless youre really sure of it :thumbup:
Alright, thanks. Is this the right link for the Amazon App Store App?: http://www.amazon.com/mobile-apps/b?node=2350149011
There are like 50 different apps on the 1mobilemarket. Which is the official Amazon one?