After knowing about Jacobs, I searched the web for some material. I ordered Golf Doctor,Practical Golf and all the video series. Jacobs' main concept is that, whatever you think or do, the main reality of golf is the effect and trajectory you give the ball when you hit it with the face of your club. Thus, analising the flight of the ball, you should be able to know what you did wrong. Beatiful concept! No wonder Jacobs' approach to golf has granted him a legion of followers. Not too silly, nor too technical, it's effective!
Here is my advise:
-BUY BOTH.- To get the core concepts from Jacobs, you can avoid buyin the new "50 lessons" book if you prefer so, but I suggest you to buy Practical Golf together with Golf Doctor, so that you have a general reference book (Practical golf), and a guide for any ball flight (Golf Doctor).
-TRY TO GET THE VIDEOS.- They will save you throusands of dollars in lessons! They are simple and wise and you can feel the teaching approach of the master himself! I do not find the "short game" video as good as the Wfull swing" one, wich is a masterpiece. Get as well the faults and correction ones.