REMINDER: You can learn more about point guards in the Basketball Point Guard tutorial.
The shooting guard is usually off to the side, and is therefore sometimes called the "off guard". This guard is responsible for scoring points. In order to do this, the shooting guard has to be active on offense, with or without the ball. Flying around screens, dribbling creatively, and finding pockets of space are all crucial parts of an off guard creating an open shot. You can learn more about shooting guards in Basketball Shooting Guard.
Off guards can also be combo guards. Combo guards can play either point guard or shooting guard, depending on where they're needed. Combo guards are becoming more common in today's NBA because having players that can score at every position makes it easier to spread the defense out. You can learn more about combo guards in Basketball Combo Guard.