The amount of rubbish posts being made is driving me insane, I have compiled most answers to your questions here if for some reason you did not read the main announcement.
IF you have not received a key now, wait a few days they may take a while, there is also another wave to go out so be patient.
You will be able to check your key on the website in a few days.
to download game, go to steam > games> activate product on steam.
If you were already in cbt1 you already have a key, if you never activated it check older emails.
If you did not sign up for a key you will not get another, do not beg and ask for keys.