Relax, keep your o-rings clean and free from grit and lubed lightly, not alot, thats one of the biggest mistakes. Be careful what you remove the o ring with as sharp objects could cause you to slice into it. When you close the housing prior to the dive, do it on dry land, way before you get onto the boat. Make sure its ready to go while in your room or something, take your time with this. Play with it, get used to your investment. Also read all your directions or instructions if you have them. Okay, when you go to close it. try to keep equal pressure around the housing, closing one clip, then the opposite clip, than accross from that one and so on, as if your mounting a wheel on your car, so as to not pinch the o ring. Youll be fine, I have a canon underwater video camera, with housing, this is all I do, all the extra stuff is just that, extra stuff, get used to what youve got now, and decide what YOU want for your camera. there are message boards all over the world that can help you with questions, as it seems its kinda few on this board. Good luck, and hope I helped ya out a bit.