It helps you with various types of plays for certain situations, explains basic theories and what to do for an offense such as the West Coast offense, and even helps on the defensive side telling when to blitz or types of coverage's to use. On the offensive side of the ball players have so many options it is almost mind boggling. A quarterback can pump fake for the aggressive defenses or lateral on that option. Runningbacks can give a stiff arm or juke to avoid defenders. Receivers are able to dive, hop, and burst with speed for that touchdown.
Defensively lineman can swim or spin to lay the smack down on the quarterback.
The blitzing linebacker can dive or pop into the ball carrier. The defensive backs can jump to block the long bomb. Ah, this is truly football at its finest. See where your holes are on your team and now you start recruiting. Build your team to your specifications by receiving scouting reports on individual players.