New PC gamer getting Black Ops2 Steam?

Hey guys so i use to be an xbox gamer but know moving to a pc gamer So like Im all new to steam and stuff so like do I need but the game from steam or do I have to go to gamestop? Will it be released on the release date on steam? Like will there be a countdown. Also my frined said that you can change your name to... show more Hey guys so i use to be an xbox gamer but know moving to a pc gamer So like Im all new to steam and stuff so like do I need but the game from steam or do I have to go to gamestop? Will it be released on the release date on steam? Like will there be a countdown. Also my frined said that you can change your name to w.e you want? And like can you talk to people like on xbox like do people susally talk to each other on the game?
Thanks,
the NOOb gamer
:P
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