You cant
Beta is no longer available
Some are free at the Playstation store others won for completing levels
Beta is expired with release of LBP 2
No it wa Little Big Planet that was the free welcome back game
It is offered as a Free Game during June 2012 for Playstation Plus Members
You get free download content with it
No. But you can use your original LittleBigPlanet costumes on LittleBigPlanet 2
You cannot.
LittleBigPlanet 2 is not in 3D
Beta is no longer available . The game was released on January 18 2011
The costume is free to download from the Playstation Store