I just bought the Rebel XTi with the 2 lens kit (18-55 & 75-300). So, I'm trying to set my priorities for additional purchases. While learning I know I will be shooting all kinds of things in many different situations, however I want my focus to be on portrait photography and capturing candid shots of people (especially my nieces and nephews). So, since I can't buy everything I need at once, where do you think I should start? I know I need: better lenses, but not sure which ones should be priority better flash than the built in flash lighting a light meter a TRIPOD (I don't know if I need one now, or if I should wait until I can afford a good one) filters? (I have UV filters for both lenses and one circular polorizer) What's are the things that will improve my photos the most right now (other than knowledge, understanding, and experience)?