The game should already be connected to your account. The CD key does not need to be used.
tack
Not likely...
You can buy the game at Best Buy or another computer game seller. It is best to buy it from Steam. You can find the link below.
That depends on what problem you are having.
By default: C:\Program Files\Valve\Steam\SteamApps\<username>\counter-strike\cstrike\ For Source: replace "counter-strike" with "counter-strike source" Note: You may have Steam installed in another directory, but the inside of the Steam directory is generally the same.
no
yes you can it will run just fine.
Yes, a first-hand account is a primary source.Whether or not it's a quality source is another matter, but it is a primary source.
Any store that sells computer games.
Counter Strike: Source uses the Source engine.
yes it can
A compiler is a computer program that transforms the source code into another language that a computer that can understand.