Making a drawing with just a few pencil strokes isn't magic, it's sketching! Because this exercise is an art of its own. So where and how do you sketch? Here are a few hints...
Try sketching both indoors and outdoors: the play of light is totally different. You'll be better off working on static subjects to begin with. You can move on to subjects in motion after a little practice.
Here are some rules to follow:
Quick and easy, this method consists of just sketching light and dark areas, without drawing contours. It lets you work on contrasts and volumes at the same time.
You have several options for including color in your sketch: