The significance and impact of Benedict and his rule was massive and presented the Christian experience in a new way. the Benedictines transformed monasticism from a solitary and often wandering tradition into a communal brother and sisterhood highlighted by a permanent location and a daily rule of work and prayer. Benedict basically put on end to the Celtic "rule" which in his eyes was too loose and unorganized. Put another way, Benedict replaced the Celtic notion of wandering with the importance of stability. In Benedict's opinion, the spiritual life could only flourish within structure or as we might say today, within a fixed system and rule of life.
As I have indicated in some of my other reviews in this series, the best way to learn about the Benedictines is to visit a Benedictine monastery first hand. I mention this only because I was raised in a Protestant home and then in my twenties went to a Benedictine monastery in up state New York and experienced monastic life first hand-it was a fantastic experience! This was Holy Cross Monastery which is linked here.