My friend was going to get on so we could level him a bit and when he logged on, it sent him straight to the tutorials and intro, like he had never used SC before.
He has Windows 8.1 and a pretty decent box. It’ll run essentially anything you throw at it.
He got off and tried using the launcher, (instead of Steam) and it did the same thing.
Extra info: When he logged on he didn’t show up in my friends list, even though I have BOTH of his accounts friended. (He made launcher account, then binded with Steam acc.) We have yet to try again, because after a few more tries we got bored and moved on to another game.