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Simply move down at the beginning and kill the zerg thread, kill the Queen to win, the only way to loose, is if you die.. Your shield will regain it's power quickly out of combat, and your life when you attack(life steal)
Camera - Hold down the right mouse button for about a second to adjust the camera angel, zoom with mouse wheel, and to reset, click your mouse-middle-button.
That's pretty much it. Your life is in the top-left, and your current opponent in the top-right.
I'm going to figure out some abillities, apart from Charge now
Have fun