Go to the store and ask the chick that works there...
"Do you sell any Black Ops copies?"
If so tell her:
"Thank you i would like to buy one. BTW my name is [insert ur name here], nice to meet some wonderful worker like you. I am new at this zone so I don't know so many peeps. You are? [insert chick name here], nice name. Well [insert chick name here] wanna IDK go out sometimes?" Good luck.
download utorrent, google it.
go to piratebay or anyother torrent site.
search for call of duty black ops.
launch the .torrent file (do it over night as it may take awhile)
read the readme which is embedded within the cod bo folder that u dl'ed.
or just google 'how to torrent'