There are many websites one can use to get Xbox Mods online. They can be found on sites such as 'Xbox MB', 'Se7en Sins', 'Xpgamesaves' and from 'minecraftxboxmods'.
No.
Only on spec ops online (as in You have the mods and you invite a friend over xbox - then have fun)
One can find Xbox 360 case mods and instructions on how to do a case mod at the websites of Instructables, Hack n Mod, Xbox 360 Achievements. Youtube also has several videos on case mods.
no you do not have to
There are none, the Xbox 360 edition does not yet contain any mods.
there are no mods for minecraft on xbox
You can't get mods on the Xbox 360 because it can't download mods at all.
you have to stick it in
No. Xbox does not support modifications to games.
no mods are only available to the PC version
No, it is confirmed that there will be no Minecraft mods for Xbox. It was announced at PAX East that there would be no mods for Minecraft.
Don't buy a pre-jtagged Xbox. Jtag an Xbox yourself, it's much cheaper. If you're buying a jtag to host 'CoD Lobbies' then don't bother as you will be wasting your money.