A few days ago I have played with an acquaintance of mine that I haven't seen for some time, he played much better then I remembered, when I asked him what he did to improve so much he told me that the improvement is mostly because he practiced the techniques he learned from a book called The Simple Golf Swing.

Did anyone tried it? I would like to know what you think, because I want to get a copy, but not sure if its worth it, or all the info there is well known?
The address is www.golfswingguru.com If you're wondering

Good day.