This is the current version of the tournament/advanced rules (1.1), 2v2 rules and the FAQ for GOSU from moonstergames.com.
I wanted them to be in a nicer format for keeping with the game so I formatted them and figured some other people would appreciate not having to duplicate my work.
The rules are formatted for printing in the same size and style as the official GOSU rulebook that comes with the game.
After actually attempting to print this out I figured out that it works best if you cut the paper to the correct size before printing as otherwise Adobe doesn't line things up correctly.
I take no credit for any of the content/art/design.