
I've played Legendia (PS2), Symphonia (GC), Graces, Xillia, and Xillia 2 (all PS3). Other than the two Xillia games, none of them are really related to each other. As for combat, yes, moving the left stick while pressing X or O will give you different moves. A lot of the combat is explained in the Library section of the menu screen. You can (or at least previous games allowed you to) map certain attacks to different buttons. I haven't really explored that too closely yet, but I probably should... As for where I am in the game, I just woke up at the inn after becoming the Shepherd.