Bobby Jones besides being a remarkable golfer had a penchant for the written word- and this text taken from his book Bobby Jones On Golf- again gives us amazing insight into one of the most problematic areas of the golf swing for the average golfer- The Transition and Downswing
The Happy Gilmore is one of the first starting points to understand how the right leg absorbs pressure on the downswing. Watch this video of Sergio Garcia as he recently went full "Happy".
George Knudson's name was always mentioned in the circles of the "great ballstrikers" and this is an excellent article from Knudson in his own words about the transition and downswing and how it relates to lateral motion and the release.
Justin Rose has for a long time now used a pre swing rehearse where he twists and drops his arms in the downswing. Hear him explain exactly why he does it. It may not be exactly what I strive for with my students but the reason is basically the same. 
Getting too aggressive with the hip action from the top of the backswing will do more harm than good for most golfers. In this student lesson I show a couple of different ways to learn to bump forward before opening up.
Bryden MacPherson totally revamped his game with our work the past 20 months and became the hottest player on the Australian PGA summer circuit. Here is what you can learn from his swing and how he made the changes.