If you're in the first group, your life is pretty easy. Just hit up this link and you're in, provided you meet the requirements. If you're going through Gamestop, you'll want to act fast: Only the first 5,000 to preorder are going to be in on the month of action, which will include one mode ("Gold Rush") and two maps. There's more info about the Gamestop keys here. No matter which way you get in, the beta starts March 25 and continues until April 25. So what's the word? Will you be taking advantage of the beta?