You gain experience by getting kills, winning objectives, and completing challenges and some contracts.
go play team death match in core, or if you are really good go to wager match high roller and gun game.
you have to get to lvl 50, then gain XP to be able to prestige
No
Black Ops.
50 with max xp.
yes ub to peskeeh on youtube
use Modio to hack it
kill people, get xp...just like MW2
search and destroy
you have to alot of xp points
No. Any EXP you earn during the match, you gain immediately. If you leave in the middle of a match, you will not get a match bonus, which can be a lot if you played a good game.
Uhhhmm, no, you can on Modern Warfare 2 though.
Yes, you need XBOX Live in order to do so.