I just got a new Canon Rebel XS N and some black and white film to go along with it. The film is Kodak with ISO 400. What are the best settings to take b&w photographs with (i.e. shutter speed and f/ratio)? I'd probably be taking pictures of people, my cat, things around the house etc etc. Basically everything would be kind of close since the lens is only 35-80mm. Should I use the flash with b&w photos too? Also, on the film it says DXn and also BWC...i'm new to all of this, could somebody clue me in!