Some subjects may appear quite bland when photographed in color, but really come to life when presented in black and white. Likewise, sepia tones can give your photos a very rustic look and make them more visually interesting than they may appear in color.
Many photographers shoot their photos in color and convert them to black and white using photo editing software. Shooting in color offers greater flexibility and may produce better results during editing.
Think in black and white while taking your photos. Be looking for contrasts, lighting and shadows. Pay particular attention to textures. Cloudy and overcast days offer great opportunities to take black and white photos while outdoors.
Be sure to shoot on low ISO settings. Higher ISO settings can produce grain and noise that become more obvious in black and white photographs.
As always, experiment to see what techniques work best for you!