Hi guys, I have NO idea how to use my darn flash. I have a Canon EOS Rebel XS, and a 580 EXII flash. I usually shoot in Aperature Priority mode. I'm just not "getting" how to use the flash. I mean, I can attach it, hit the little lightning bolt button, and when I take the photo, the flash goes off. But it's not too good. I've tried turning it to the side and bouncing off the ceiling, but when it comes to shooting people, I'm not happy with it. I guess my main question is: What do you adjust on the camera? Is there a setting I should be doing or something? Thanks in advance!