Yes
If the Xbox 360 was free it Would be the Xbox 360 but since it's not it has to be the PS3
A few steps, when your on the dash board, press the guide button, and go over to "xbox market place" then select games, videos, or other.
Some games, but not all of them.
Nearly all Xbox games should work on the Xbox 360, but quite a few don't.
Yes, if you for example go to the Xbox 360 Live Marketplace and buy or update your console if you haven't.
no it can go on any xbox 360 console cause i have the arcade and it plays fine on that
Kinect is made by Microsoft, to go with their XBox 360 console.
Yes. It can also be done while the console is still on. The 360 will just reset automatically.
Go to your dashboard and put your disk in and it will say install to harddrive. Its very easy to find but hard to explain u'll find it. Trust me.
Microsoft says the difference between the standard (not elite) and arcade is: There is a difference in hard drive size Xbox 360 Arcade cannot play ALL original xbox games. Arcade comes with arcade games such as Uno Arcade is cheaper By pro i believe you mean "elite console". The elite console is black, not white and has a MASSIVE hard drive. But the elite is very expensive. I would go for the standard.
No, Xbox 360 games can only be played on the Xbox 360. However some Xbox original games can be played on the Xbox 360.
Yes! But not all. go to Xbox.com for a complete list of (original) games that are able to play on the Xbox 360