I was wondering how exactly to get a starcraft 2 beta or how to play it and whatnot. I've searched some but can't see where to go to play the beta. Help would be insanely awesome if anyone knows.
You must be opted in, have gone to a Blizzcon Event (2008/2009), or been invited by a friend. To Opt In, go to the Starcraft 2 Site and look under the FAQ, that should help you.
Even if you opt in, you wont get a beta key. The invite waves are over. Your best chance is to try and get some off of the starcraft 2 facebook page.
i have a friend at school who was talking about how he was playing it and so i was wondering, can you use the same beta key on 2 different computers?
No. Even if he gave you his account and you downloaded it on that account, it's not what it was meant for. The opt in is for Computer Specs, they're trying to ensure that those who buy the game can run it well on their computer. Also, if he gave you his account, and you were playing on it, the BETA might be taken away.