Charismatic and charming, volcanic and ruthless, seemingly ambitious and astonishingly successful: Sir Alex Ferguson is all of these things and more, a complex character who has produced - first at Aberdeen and now at Manchester United - two of the most prolific trophy-grabbing machines in the modern game.But what drives him? What has fuelled the desire to transform himself from a poor Glasgow childhood into one of the titans of the modern game? The Boss will be essential reading not just for Manchester United fans and all football followers, but anyone interested in the skills of successful management in general.