where to start, Any tips or tricks? I have a Canon FTb QL from the '70's with a 3 fixed lenses; 50mm, 100mm and 35mm. I also have an external flash for the camera. I understand all the basic rules such as the rule of thirds in composition. Aperture and exposure I understand somewhat, but i have absolutely no idea where to start. I've read the manual to the camera and know it's basic functions. I just don't know what settings are good for what light, how much of it is estimation, and what is fact. Any help would be awesome