Hello, This weekend, I may be attending a roller derby and will be attending a horse show (dressage, specifically, whatever that means). The roller derby will be an informal spectator thing, but I thought it would be fun to try my hand at shooting action in low-light conditions (the arena is VERY dark for whatever reason). For the horse show, I was asked by a friend, who is even more of a novice than I am, if I would go with her and give her pointers on how to use her new D300 (same camera as I have, but she only has one lens... I think it's an 18-200mm VR?). I'm flattered that she'd ask, but I'm concerned 'cause I'm not much past novice myself. With that background, any tips, techniques, or settings that you folks could recommend would be INVALUABLE!! Like I said the roller derby will be low-light action. The horse show is outdoors (I believe) and will be around 2:00PM. Thanks!! And yes, since this thread is in the gallery, I will post pictures after the weekend.