With the outside roll, the rudder is coordinated just as when rolling to knife-edge, leaving only the elevator input to learn. That makes it easier and more natural to learn.

However, DCronkhite is absolutely correct...learn them all and in both directions. With discipline, one can learn them in a season. Practice your slow rolls in both direction, knife-edge too, to limber up the brain and the thumbs, then work your rollers starting by the quarter.

By the end of the season, you will be twice the pilot you were before.

Mark