Now that I have a decent handle on my DSLR, I think I am ready to start working with lighting. At this point, I am a bit clueless as far as the lighting equipment goes. Clearly a flash is the most common, but I would really like to know more about external flashes, remotes, reflectors, things of that nature. If you can explain how to shop for a flash, that would be very handy. I suppose my use for it is very important, portraits are one of the things I would use it for (mostly outdoors), I also love photographing abandoned buildings (typically dark), and sometimes cars and motorcycles. I have little to no interest in studio photography. I spoke with a fellow photographer about this, and he urged me to go with a vivitar flash, or two, because they are still good quality...they simply do not have the CANON name on them. Please give me some guidance.