This document discusses how to use rondos, a type of possession drill, to train teams to play in the possession style favored by Spanish teams like Barcelona. Rondos involve keeping possession against opponents in a confined space and can be used to work on both technical skills like short passing as well as tactical positioning and overloads. Several examples of rondo setups are provided that focus on different tactical situations like playing out from the back or switching sides. Rondos are presented as an effective way to train players to recognize and reproduce positional and tactical patterns of play during matches.