Welcome welcome! And do you mean to say you have not made a pledge for the game yet? My understanding is that you can pledge $45 for Star Citizen (the online multiplayer game) + a choice of one of the starter ships, or $60 also includes the single player campaign Squadron 42. Getting either package means pretty much buying the game and allowing you to play in its current Alpha state as well as when it goes to Beta over the next (probably 8+ months) as well as full release version.
If you've already pledged, you should already have access to the game. Otherwise, I don't know if they're going to just randomly select people to test the Beta when they reach that point. I'll PM you some more details.