No. Xbox discs will only work on an Xbox console
only one xbox can use the card but only that gamertag can use it.
Only if you have one of the first PS3's then newer versions are not compatible.
You can play original Xbox games on the 360 because it is backwards compatible but you cannot play any other console games on the Xbox 360 because it does not support other discs. There would be no point in other discs if you could play one disc on any console.
No, there is no cross-platform support on the Xbox One or Xbox 360 (same with Playstation 3 and 4).
Yes, you can use your Xbox Live account on your new Xbox One.
Yes, any Xbox game that says Xbox One will run on any Xbox One series console (Including the Xbox One X). The Xbox One is a series of consoles that is still currently going. Even Xbox 360 game disc will run on the Xbox One series.
yes, the webcam specifically designed for the 360 will work, I have one myself
Xbox Live is not needed to install the Shivering Isles expansion pack but Xbox Live Silver will be needed to download this expansion pack. Unless you have purchased the Game of the Year edition in which Shivering Isles is included on one the extra discs to download directly to your hard drive.
On the Xbox it is 3 discs On the Ps3 it is 1 disc
Yes, you can log on to 2 accounts at the same time. For it to work you need 2 Xbox Live accounts.
Yes, it does.