I have used small-sided games more and more in my own training sessions as the years have passed. I find I can teach all the coaching points I need and the players really prefer small-sided games to standing in lines. Most coaches use small-sided games, I just seem to get better results from my players the more I use them.
Our 50 Small-Sided Games That Make a Difference eBook includes chapters on Shooting and Finishing, Passing and Possession, Crossing and Finishing, Warm-Ups, and Conditioning.