Today is the first day Grand Theft Auto V is available for the PC. It's been available for gaming consoles for months, and today is a grand day in which the game is finally brought to a platform where it can shine brightest. But before you jump in and check out what all the hubbub is about, you're going to need to know three very important things. The first - do NOT begin streaming the game before you minimize your registration key window. Whatever you do, do NOT begin streaming when the game FIRST boots up.