Okay for those who don't understand this in the slightest idea of what to do (since i just found out one of my Mods didn't):
Gaia's shadow is a RPG site so you will create a character to will play with and pretend to be them.
You will join up with other such characters under a GM (game master) who will direct, and narrate your story.
The GM will create everything in the RP from enemies you will or wont fight, allies you meet and essential what your goals are.